 
Published October 11, 2025 by Michael Le Pard , Editor‑in‑Chief
Total Motorcycle Bikers Dictionary
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Neck – The front of a motorcycle frame, where the steering head is located.
| Nacelle — Headlight housing, especially on cruisers and touring bikes. | ||
| Nacelle Fairing — Fairing integrated with or surrounding the headlight nacelle. | ||
| Nacelle Mount — The mounting point or bracket for a nacelle (headlight housing). | ||
| NAH (Not A Harley) — Slang for any motorcycle that isn’t a Harley‑Davidson. | ||
| Naked Bike — Motorcycle with little or no bodywork, exposing the engine. | ||
| Naked Standard — Upright, unfaired motorcycle emphasizing versatility. | ||
| Naked Streetfighter — Stripped sportbike with aggressive styling. | ||
| Nappa Leather — Smooth, soft leather used in premium motorcycle gear. | ||
| NARMA — North American Russian Motorcycle Association. | ||
| Narrow Ape Hangers — Tall, narrow handlebars often seen on custom choppers. | ||
| Narrow Band O₂ Sensor — Oxygen sensor type used in some motorcycles for fuel mixture feedback. | ||
| Narrow Case — Ducati engine/frame design from the 1960s, predecessor to the wide‑case models. | ||
| Narrow Frame — Motorcycle frame with slim geometry, often used in vintage or lightweight bikes. | ||
| Narrow Glide — Harley‑Davidson front‑end design with narrow fork spacing. | ||
| Narrow Tire — Slim tire, often used on vintage or lightweight motorcycles. | ||
| National Cycle — Aftermarket manufacturer of windscreens and accessories. | ||
| National Enduro — Off‑road racing series sanctioned by the AMA (American Motorcyclist Association). | ||
| National Enduro — Off‑road racing series sanctioned by the AMA. | ||
| National H.O.G. Rally — Harley Owners Group national‑level rally. | ||
| National Rally — Large‑scale motorcycle rally held at a national level. | ||
| National Speedway — Organized speedway motorcycle racing at a national level. | ||
| Navigation System — GPS or digital mapping system for motorcycles. | ||
| Navigation Tower — Structure on rally/adventure bikes holding roadbooks, GPS, and instruments. | ||
| NBD (Never Been Dropped) — Phrase in used bike ads, often misleading. | ||
| N‑Cycle — Slang for a motorcycle in neutral gear. | ||
| Neck — The steering head of a motorcycle frame. | ||
| Neck Bearing — Bearing located in the steering head of the frame. | ||
| Neck Rake — Angle of the steering head relative to vertical. | ||
| Needle Bearing — Small roller bearing reducing friction in steering or wheels. | ||
| Needle Jet — Carburetor component controlling fuel flow at mid‑throttle. | ||
| Needle Valve — Carburetor valve regulating fuel flow into the float bowl. | ||
| Negative Camber — Tire lean angle improving cornering grip. | ||
| Negative Ground — Electrical system design where the frame is connected to the battery’s negative terminal. | ||
| Negative Terminal — Battery terminal marked with a minus sign. | ||
| Neon Lights — Decorative lighting often used in custom motorcycles. | ||
| Neoprene Guards — Protective covers for shocks or forks, shielding against dirt. | ||
| Neoprene Mask — Cold‑weather face covering used by riders for wind protection. | ||
| Neoprene Wraps — Insulating wraps for fork tubes or grips, reducing vibration and cold. | ||
| Neutral — Gear position where no drive is engaged. | ||
| Neutral Drop — Aggressive launch technique: revving in neutral then dropping into gear (hard on transmissions). | ||
| Neutral Drop — Aggressive launch technique: revving in neutral then dropping into gear. | ||
| Neutral Finder — Kawasaki feature allowing easy shift into neutral. | ||
| Neutral Handling — Balanced steering without understeer or oversteer. | ||
| Neutral Indicator — Dashboard light showing the bike is in neutral. | ||
| Neutral Light — Dashboard indicator showing the bike is in neutral. | ||
| Neutral Safety Circuit — Wiring that prevents starting unless in neutral or clutch pulled. | ||
| Neutral Safety Switch — Prevents starting unless in neutral or clutch pulled. | ||
| Neutral Switch — Electrical switch activating the neutral indicator. | ||
| Neutral Throttle — Maintaining steady throttle without acceleration or deceleration. | ||
| Neutral Zone — Free play in clutch or throttle. | ||
| New Generation Bike — Marketing term for modernized models with updated tech. | ||
| New Old Stock (NOS) — OEM parts no longer made but still available. | ||
| New Rider Course — Training program for beginner motorcyclists. | ||
| New Rider Insurance — Higher‑rate insurance category applied to beginner riders. | ||
| New School Chopper — Contemporary interpretation of the classic chopper style. | ||
| New School Custom — Contemporary custom motorcycle style influenced by café racers, trackers, and modern design. | ||
| New Wave Custom — A design trend blending retro and futuristic elements in custom builds. | ||
| Newbie — A rider new to motorcycling. | ||
| Newbie Rider — A person new to motorcycling, often still learning basic skills. | ||
| Newspaper Run — Informal slang for a short, casual ride. | ||
| Next Gen Helmet — Advanced helmet featuring integrated electronics, HUD, or communication systems. | ||
| N‑Frame — Motorcycle frame with N‑shaped geometry (custom slang). | ||
| N‑Gauge — Digital or analog gauge cluster nickname. | ||
| Nickel Finish — Decorative or protective nickel plating on motorcycle parts. | ||
| Nickel Metal Hydride Battery (NiMH) — Rechargeable battery type, sometimes used in hybrids. | ||
| Nickel Plating — Metal finish used on custom parts. | ||
| Night Blindness — Rider condition where vision is impaired at night. | ||
| Night Dragon — Pirelli tire line designed for cruisers. | ||
| Night Glasses — Yellow‑tinted glasses used to reduce glare during night riding. | ||
| Night Mode Display — Dashboard setting with dimmed lighting for night riding. | ||
| Night Owl Rider — Slang for a rider who prefers late‑night rides. | ||
| Night Rally — Rally event held after dark. | ||
| Night Rallycross — Off‑road motorcycle racing held at night. | ||
| Night Ride — Group or solo ride after dark. | ||
| Night Rod — Harley‑Davidson V‑Rod variant. | ||
| Night Run — Organized group ride at night. | ||
| Night Shift — Slang for late‑night riding culture. | ||
| Night Train — Harley‑Davidson Softail model. | ||
| Night Vision Goggles — Military‑style NV gear adapted for some riders. | ||
| Night Vision Helmet — Helmet equipped with night‑vision technology. | ||
| Night Watch Club — Informal group of riders who patrol or ride at night. | ||
| Nighthawk — Honda Nighthawk series of standard motorcycles. | ||
| Nightster — Harley‑Davidson Sportster variant. | ||
| Nine Lives — Slang for a rider who has survived many crashes. | ||
| Nine O’Clock Position — Handlebar or control reference point. | ||
| Nipple Surfing — Slang for sliding face‑down after a crash. | ||
| Nippon — Japanese term for Japan, often used in reference to Japanese motorcycles. | ||
| Nippon Classic — Vintage Japanese motorcycle. | ||
| Nippon Steel Frame — Japanese‑made steel motorcycle frame. | ||
| Nitride Coating — Hard surface treatment for engine parts. | ||
| Nitride Gear — Gear treated with nitride for wear resistance. | ||
| Nitride Valve — Valve treated with nitride for durability. | ||
| Nitro — Slang for nitromethane fuel used in drag racing. | ||
| Nitro Bike — Drag racing motorcycle running on nitromethane. | ||
| Nitro Harley — Harley‑Davidson drag bike powered by nitromethane. | ||
| Nitrogen Oxides (NOx) — Pollutant gases from combustion engines. | ||
| Nitrous Kit — Aftermarket system for adding nitrous oxide. | ||
| Nitrous Oxide (NOS) — Gas injected into engines for a temporary power boost. | ||
| Nitrous Purge — Venting nitrous before a run to ensure proper pressure. | ||
| Nixie Tube Gauge — Retro gauge using glowing Nixie tubes. | ||
| N‑Line — Slang for inline engine configuration. | ||
| NMC Battery — Lithium Nickel Manganese Cobalt battery, used in electric motorcycles. | ||
| NMC Battery — Lithium Nickel Manganese Cobalt battery, used in EV motorcycles. | ||
| No‑Bar Bike — Slang for a motorcycle with clip‑ons or minimal handlebars. | ||
| No‑Bar Drag Bike — Drag bike without traditional handlebars. | ||
| No‑Bar Stunt — Stunt performed without holding handlebars. | ||
| No‑Choke Start — Fuel‑injected bike starting without a choke. | ||
| No‑Clutch Shift — Shifting gears without using the clutch. | ||
| No‑Clutch Start — Starting a bike without clutch use. | ||
| No‑Clutch Wheelie — Wheelie performed without clutch input. | ||
| No‑Cut Frame Slider — Crash protection that doesn’t require frame modification. | ||
| Nod — Rider’s head tip to acknowledge another motorcyclist. | ||
| No‑Frills Bike — Basic motorcycle without extras. | ||
| No‑Frills Helmet — Basic helmet without features. | ||
| No‑Frills Jacket — Basic riding jacket. | ||
| No‑Hands Ride — Riding without hands on the bars (dangerous stunt). | ||
| No‑Hands Stoppie — Stoppie performed without hands. | ||
| No‑Hands Wheelie — Wheelie performed without hands. | ||
| Noise Control Act — U.S. law regulating vehicle noise. | ||
| Noise Emissions — Legal limits on motorcycle exhaust sound. | ||
| Noise Limit — Legal maximum for motorcycle exhaust sound. | ||
| Noise Meter — Device measuring exhaust decibels. | ||
| Noise Ordinance — Local law restricting loud pipes. | ||
| Noise Test — Inspection measuring exhaust decibels. | ||
| No‑Limit Club — Motorcycle club with “no limits” ethos. | ||
| No‑Limit Rider — Slang for a fearless or reckless rider. | ||
| No‑Limit Run — Group ride with no speed restrictions. | ||
| No‑Load Condition — Engine running without load. | ||
| No‑Load Test — Electrical test without load applied. | ||
| No‑Load Voltage — Battery voltage without load. | ||
| Nomad (MC) — Club member without a fixed chapter, often traveling enforcer. | ||
| Nomad Lifestyle — Lifestyle of constant motorcycle travel. | ||
| Nomad Patch — Club patch for members without a chapter. | ||
| Nomad Rally — Rally for traveling riders. | ||
| Nomad Rider — Rider who travels without a fixed home base. | ||
| No‑Mar Tire Tool — Brand of tire‑changing tools designed to prevent rim damage. | ||
| Nomex® — Heat‑resistant aramid fiber used in racing suits. | ||
| Nominal Capacity — Rated capacity of a battery or tank. | ||
| Nominal Load — Rated load of a component. | ||
| Nominal Speed — Rated speed of a component. | ||
| Nominal Voltage — Rated voltage of a motorcycle battery. | ||
| Non‑ABS Brakes — Braking system without anti‑lock technology. | ||
| Non‑Adjustable Forks — Forks without external adjusters. | ||
| Non‑Aggressive Rider — Rider with cautious style. | ||
| Non‑Aggressive Suspension — Suspension tuned for comfort. | ||
| Non‑Aggressive Tire — Tire with mild tread. | ||
| No‑Name Bike — Slang for a generic or obscure motorcycle brand. | ||
| Non‑Catalyst Bike — Motorcycle without catalytic converter. | ||
| Non‑Conductive Boots — Electrical safety boots. | ||
| Non‑Conductive Gloves — Electrical safety gloves. | ||
| Non‑Conductive Tools — Tools insulated for electrical work. | ||
| Non‑Current Model — Motorcycle no longer in production. | ||
| Non‑Detergent Oil — Outdated oil type without cleaning additives. | ||
| Non‑Directional Pattern — Tread pattern usable either way. | ||
| Non‑Directional Tire — Tire mountable in either direction. | ||
| Non‑Directional Tread — Tire tread usable in either direction. | ||
| Non‑Directional Wheel — Wheel usable in either direction. | ||
| Non‑DOT Helmet — Helmet not meeting DOT safety standards. | ||
| Non‑Ethanol Fuel — Gasoline without ethanol blend. | ||
| Non‑Friction Coating — Coating reducing friction. | ||
| Non‑Friction Plate — Steel plate in a clutch pack. | ||
| Non‑Friction Surface — Surface designed to reduce friction. | ||
| Non‑Glare Lens — Anti‑glare headlight lens. | ||
| Non‑Glare Screen — Anti‑glare windscreen. | ||
| Non‑Glare Visor — Anti‑glare helmet visor. | ||
| Non‑Hydraulic Clutch — Cable‑operated clutch. | ||
| Non‑Interference Engine — Engine design where valves don’t hit pistons if timing fails. | ||
| Non‑Locking Cap — Fuel cap without a lock. | ||
| Non‑Metallic Pads — Organic brake pads. | ||
| Non‑Methane Hydrocarbons (NMHC) — Pollutants contributing to smog. | ||
| Non‑Methane Organic Gases (NMOG) — Air pollutants excluding methane. | ||
| Non‑OEM Exhaust — Aftermarket exhaust not made by OEM. | ||
| Non‑OEM Filter — Aftermarket filter not made by OEM. | ||
| Non‑OEM Part — Aftermarket part not made by the original manufacturer. | ||
| Non‑O‑Ring Chain — Basic motorcycle chain without sealing rings. | ||
| Non‑Plated Rider — Rider without a license plate. | ||
| Non‑Radial Tire — Bias‑ply tire. | ||
| Non‑Return Valve — One‑way valve in fuel or oil system. | ||
| Non‑Rider — Person who doesn’t ride motorcycles. | ||
| Non‑Riding Event — Motorcycle event without riding (e.g., show). | ||
| Non‑Riding Gear — Apparel not intended for riding. | ||
| Non‑Sealed Battery — Conventional battery requiring maintenance. | ||
| Non‑Sealed Bearing — Bearing requiring lubrication. | ||
| Non‑Sealed Chain — Chain without O‑rings or X‑rings. | ||
| Non‑Sealed Fork — Fork requiring maintenance. | ||
| Non‑Sealed Hub — Wheel hub requiring lubrication. | ||
| Non‑Slip Grip — Handlebar grip with textured surface. | ||
| Non‑Slip Pegs — Footpegs with grip surface. | ||
| Non‑Standard Bolt — Bolt not matching OEM spec. | ||
| Non‑Standard Nut — Nut not matching OEM spec. | ||
| Non‑Standard Washer — Washer not matching OEM spec. | ||
| Non‑Stock — Any part not original to the motorcycle. | ||
| Non‑Stock Exhaust — Aftermarket exhaust system. | ||
| Non‑Synchro Gearbox — Transmission without synchronizers. | ||
| Non‑Toxic Coolant — Safer antifreeze for motorcycles. | ||
| Non‑Tubeless Tire — Tire requiring an inner tube. | ||
| Non‑Vented Helmet — Helmet without airflow vents. | ||
| Non‑Vented Rotor — Solid brake rotor. | ||
| Non‑Vented Tank — Fuel tank without venting. | ||
| Non‑Waterproof Bag — Luggage or saddlebag not resistant to water. | ||
| Non‑Waterproof Boots — Footwear not designed to resist water penetration. | ||
| Non‑Waterproof Cover — Motorcycle cover that does not protect against rain. | ||
| Non‑Waterproof Gear — Riding gear not resistant to water. | ||
| Non‑Waterproof Gloves — Riding gloves not resistant to water, prone to soaking in rain. | ||
| Non‑Waterproof Jacket — Jacket not resistant to water. | ||
| Non‑Waterproof Jacket — Riding jacket not resistant to water, prone to soaking in rain. | ||
| Non‑Waterproof Suit — Riding suit without waterproofing, often textile or leather. | ||
| Non‑Working Axle — Axle that is bent or broken. | ||
| Non‑Working Bar — Handlebar that is bent or broken. | ||
| Non‑Working Battery — Dead or defective motorcycle battery. | ||
| Non‑Working Bearing — Bearing that has seized. | ||
| Non‑Working Brake — Brake system that fails to stop effectively, a critical safety hazard. | ||
| Non‑Working Brake Light — Brake light that has failed. | ||
| Non‑Working Cable — Control cable that has snapped. | ||
| Non‑Working Cap — Fuel cap that is broken. | ||
| Non‑Working CDI — Capacitor discharge ignition unit that has failed. | ||
| Non‑Working Chain — Chain that has broken or seized. | ||
| Non‑Working Charger — Charger that fails to restore battery power. | ||
| Non‑Working Circuit — Circuit that has failed. | ||
| Non‑Working Clutch — Clutch that fails to engage or disengage. | ||
| Non‑Working Coil — Ignition coil that no longer produces spark. | ||
| Non‑Working Coil Wire — Coil wire that has failed. | ||
| Non‑Working Connector — Connector that has failed. | ||
| Non‑Working Cover — Cover that is cracked or missing. | ||
| Non‑Working Earth — Earth connection that has failed. | ||
| Non‑Working ECU — Engine control unit that has failed. | ||
| Non‑Working Electrical — General term for failed electrical components (e.g., lights, horn, switches). | ||
| Non‑Working Engine — Motorcycle engine that fails to start or run due to mechanical or electrical faults. | ||
| Non‑Working Fairing — Fairing that is cracked or missing. | ||
| Non‑Working Fan — Cooling fan that has failed. | ||
| Non‑Working Filter — Filter that is clogged or ineffective. | ||
| Non‑Working Fork — Fork that has lost damping or oil. | ||
| Non‑Working Frame — Frame that is cracked or bent. | ||
| Non‑Working Fuse — Blown fuse preventing circuit operation. | ||
| Non‑Working Fuse Box — Fuse box that has failed. | ||
| Non‑Working Gauge — Dashboard gauge that no longer functions. | ||
| Non‑Working Grip — Grip that is torn or loose. | ||
| Non‑Working Ground — Ground connection that has failed. | ||
| Non‑Working Harness — Wiring harness that has failed. | ||
| Non‑Working Headlight — Headlight that has failed. | ||
| Non‑Working Horn — Horn that is non‑functional, often a safety violation. | ||
| Non‑Working Housing — Housing that is cracked or broken. | ||
| Non‑Working Hub — Hub that has failed. | ||
| Non‑Working Ignition — Ignition system that has failed. | ||
| Non‑Working Indicator — Turn signal that has failed. | ||
| Non‑Working Injector — Fuel injector that has clogged or failed. | ||
| Non‑Working Key — Key that is broken. | ||
| Non‑Working Kill Switch — Kill switch that has failed. | ||
| Non‑Working Lever — Brake or clutch lever that is broken. | ||
| Non‑Working Light — Headlight, taillight, or indicator that has failed. | ||
| Non‑Working Light Switch — Light switch that has failed. | ||
| Non‑Working Lock — Lock that is broken. | ||
| Non‑Working Loom — Wiring loom that has failed. | ||
| Non‑Working Panel — Panel that is cracked or missing. | ||
| Non‑Working Peg — Footpeg that is broken. | ||
| Non‑Working Plug — Spark plug that has fouled or failed. | ||
| Non‑Working Plug Wire — Plug wire that has failed. | ||
| Non‑Working Pump — Fuel or oil pump that has failed. | ||
| Non‑Working Radiator — Radiator that no longer cools effectively. | ||
| Non‑Working Relay — Relay that fails to pass current. | ||
| Non‑Working Relay Switch — Relay switch that has failed. | ||
| Non‑Working Rim — Rim that is bent or cracked. | ||
| Non‑Working Screen — Windscreen that is cracked or missing. | ||
| Non‑Working Seal — Seal that has failed, causing leaks. | ||
| Non‑Working Seat — Seat that is torn or broken. | ||
| Non‑Working Sensor — Sensor that no longer provides accurate data. | ||
| Non‑Working Shock — Shock absorber that has failed. | ||
| Non‑Working Signal — Signal that has failed. | ||
| Non‑Working Spoke — Spoke that is broken or loose. | ||
| Non‑Working Sprocket — Sprocket that is worn or broken. | ||
| Non‑Working Stand — Kickstand or center stand that has failed. | ||
| Non‑Working Starter — Starter motor that does not engage. | ||
| Non‑Working Starter Button — Starter button that has failed. | ||
| Non‑Working Subframe — Subframe that has failed. | ||
| Non‑Working Suspension — Suspension that no longer dampens properly. | ||
| Non‑Working Swingarm — Swingarm that is bent or cracked. | ||
| Non‑Working Switch — Electrical switch that has failed. | ||
| Non‑Working System — System that has failed. | ||
| Non‑Working Taillight — Taillight that has failed. | ||
| Non‑Working Tank — Fuel tank that leaks. | ||
| Non‑Working Thermostat — Thermostat that no longer regulates temperature. | ||
| Non‑Working Tire — Tire that is flat or damaged. | ||
| Non‑Working Tube — Inner tube that has punctured. | ||
| Non‑Working Wheel — Wheel that is bent or cracked. | ||
| No‑Pass Flag — Racing flag indicating no passing allowed. | ||
| No‑Pass Rule — Track rule forbidding overtaking in certain zones. | ||
| No‑Pass Zone — Road section where overtaking is illegal. | ||
| No‑Road Ride — Off‑road adventure beyond mapped trails. | ||
| Norton — Historic British motorcycle manufacturer, famous for the Commando and Manx racers. | ||
| Norton 650SS — High‑performance Norton twin. | ||
| Norton 750SS — Sport version of the Commando. | ||
| Norton 850 Commando — Later, larger‑capacity Commando. | ||
| Norton Atlas — Predecessor to the Commando, a parallel‑twin motorcycle. | ||
| Norton Commando — Iconic British parallel‑twin motorcycle of the 1960s–70s. | ||
| Norton Dominator — Classic Norton twin, popular in the 1950s–60s. | ||
| Norton Electra — Early Norton twin with electric start. | ||
| Norton F1 — Rotary‑engine sportbike from the 1990s. | ||
| Norton Fastback — Commando model with distinctive tail section. | ||
| Norton Hi‑Rider — Factory chopper‑styled Commando. | ||
| Norton International — Overhead‑cam single‑cylinder Norton racer. | ||
| Norton Interstate — Touring version of the Commando with larger tank. | ||
| Norton Jubilee — 250cc commuter motorcycle from Norton. | ||
| Norton Manx — Classic Isle of Man TT race bike. | ||
| Norton Model 18 — Classic Norton single. | ||
| Norton Model 50 — 350cc single‑cylinder Norton. | ||
| Norton Model 77 — 600cc twin from Norton. | ||
| Norton Model 88 — 500cc Dominator twin. | ||
| Norton Model 99 — 600cc Dominator twin. | ||
| Norton Navigator — Lightweight twin from Norton. | ||
| Norton Production Racer — Factory‑built race‑ready Commando. | ||
| Norton RCW588 — Rotary‑engine race bike that won the Isle of Man TT. | ||
| Norton Rotary — Experimental rotary‑engine motorcycles from the 1980s. | ||
| Norton V4 RR — Modern V4 superbike revival model. | ||
| Norton Villiers Triumph (NVT) — British motorcycle conglomerate formed in the 1970s. | ||
| NOS (New Old Stock) — OEM parts no longer made but still available. | ||
| Nose Cone Fairing — Small aerodynamic fairing around the headlight. | ||
| Nose Dive — Heavy front suspension compression under braking. | ||
| No‑Show Bike — Bike that fails to appear at a rally or show. | ||
| No‑Show Chrome — Cheap chrome that flakes easily. | ||
| No‑Show Rider — Rider who doesn’t show up for a planned ride. | ||
| No‑Spark Condition — Ignition failure. | ||
| No‑Spark Plug — Slang for a fouled or missing spark plug. | ||
| No‑Spark Test — Diagnostic test for ignition. | ||
| No‑Speed Limit Run — Slang for high‑speed riding on unrestricted roads (e.g., Autobahn). | ||
| Nostalgia Bike — Modern motorcycle styled to resemble a vintage model. | ||
| No‑Start Bike — Motorcycle that fails to start. | ||
| No‑Start Condition — When a motorcycle fails to start due to electrical or fuel issues. | ||
| No‑Start Relay — Relay preventing start under unsafe conditions. | ||
| No‑Start Rider — Rider whose bike won’t start. | ||
| No‑Stop Rule — Rule in trials forbidding stops. | ||
| No‑Stop Trial — Trials riding discipline where dabs or stops are penalized. | ||
| Notchy Steering — Uneven or sticky feel in steering head bearings. | ||
| No‑Tools Adjuster — Quick‑adjust component. | ||
| No‑Tools Adjustment — Feature allowing adjustments without tools. | ||
| No‑Tools Clamp — Clamp adjustable without tools. | ||
| No‑Tools Lever — Adjustable lever requiring no tools. | ||
| Novice Class — Beginner category in racing or training. | ||
| Nowhere Run — Slang for a casual ride with no set destination. | ||
| No‑Zone — Truck blind spot; safety term for riders. | ||
| No‑Zone Awareness — Rider training term for truck blind spots. | ||
| N‑Series — Manufacturer designation for certain models. | ||
| N‑Strike — Slang for a sudden, aggressive maneuver. | ||
| N‑Throttle — Slang for neutral throttle position, meaning steady throttle without acceleration or deceleration. | ||
| N‑Torque — Informal slang for torque rating expressed in Newton‑meters, often used in tuning discussions. | ||
| N‑Track — Slang for neutral track position in racing, when a bike is coasting without drive. | ||
| N‑Trip — Slang for accidentally shifting into neutral while riding, often at high RPMs. | ||
| N‑Tune — Slang for a balanced or neutral engine tune, neither rich nor lean. | ||
| Nubuck Leather — Soft, sanded leather used in some riding gear. | ||
| Number Board — Racing plate displaying competition numbers. | ||
| Number Cruncher — Slang for an accountant biker; often used humorously within riding groups. | ||
| Number One Patch — Club patch signifying top rank or status, sometimes associated with outlaw clubs. | ||
| Number Plate — Plate displaying registration or racing number. | ||
| Number Plate Bracket — Mounting hardware for license or race plates. | ||
| Number Plate Light — Illumination for license plate visibility. | ||
| Number Plate Surround — Decorative or protective frame around a license plate. | ||
| Number Plate Tilt — Angled mounting of a plate, often illegal but used for styling. | ||
| Nut Behind the Bars — Joke term for rider error; the “loose nut” is the rider themselves. | ||
| Nut Splitter — Slang for a very hard or uncomfortable motorcycle seat. | ||
| Nut Torque Wrench — Tool for tightening axle or engine nuts to the manufacturer’s specified torque. | ||
| Nutsert — Threaded insert used in motorcycle fabrication. | ||
| Nutsert Tool — Device for installing threaded inserts (nutserts) into frames or panels. | ||
| Nutty Rider — Slang for a reckless or eccentric motorcyclist. | ||
| NVH (Noise, Vibration, Harshness) — Engineering term for ride comfort factors. | ||
| N‑Vision — Slang for night vision riding gear. | ||
| N‑Vision — Slang for night‑vision riding gear or helmet technology. | ||
| Nylon Chain Slider — Plastic guide preventing chain wear on swingarm. | ||
| Nylon Gear — Lightweight gear made of nylon, used in some motorcycles. | ||
| Nylon Jacket — Textile riding jacket, lighter than leather. | ||
| Nylon Lock Nut — Nut with nylon insert to resist loosening. | ||
| Nylon Saddlebag — Soft luggage made of nylon fabric. | ||
| Nylon Strap — Tie‑down strap for securing motorcycles. | ||
| Nylon Webbing — Material used in straps, harnesses, and luggage. | ||
| Nystagmus Test — Police sobriety test sometimes used on riders. | ||
| N‑Zone — Slang for the neutral zone in clutch or throttle free play. | ||

 
		