# Dirt Track Masters

> Dirt Track Masters is a US online store for aftermarket dirt bike parts and race components. Every product lists the exact motocross and off-road bikes it fits (year, make and model). Free US ground shipping on orders over $99; 30-day returns on unopened, unmounted parts.

Key facts:
- Catalog: 55 products in 10 categories from 23 brands
- Fitment coverage: Honda CRF250R, Honda CRF450R, Honda CRF450RX, Husqvarna FC 250, Husqvarna FC 450, Husqvarna TE 300, KTM 250 SX-F, KTM 300 XC-W, KTM 350 SX-F, KTM 450 SX-F, Kawasaki KX250, Kawasaki KX450, Suzuki RM-Z250, Suzuki RM-Z450, Yamaha YZ125, Yamaha YZ250, Yamaha YZ250F, Yamaha YZ450F (2018–2026 model years)
- Shipping: free US ground over $99; most orders placed before 2PM PST ship same day; ground delivery 3-5 business days
- Contact: parts@dirttrackmasters.com, 1-800-DIRT-BIKE (1-800-347-8245), Mon-Fri 8AM-5PM PST

## Store information

- [About Dirt Track Masters](https://dirttrackmasters.com/about): who we are and how fitment is verified
- [Shipping & Returns](https://dirttrackmasters.com/shipping): delivery times, rates and the 30-day return policy
- [Contact](https://dirttrackmasters.com/contact): fitment help and order support

## Categories (each includes a technical buying guide)

- [Braking](https://dirttrackmasters.com/category/braking)
- [Drive Chains](https://dirttrackmasters.com/category/drive-chains)
- [Engine Rebuild Kits](https://dirttrackmasters.com/category/engine-rebuild-kits)
- [Exhaust Systems](https://dirttrackmasters.com/category/exhaust-systems)
- [Handlebars & Controls](https://dirttrackmasters.com/category/handlebars-controls)
- [Intake & Fuel](https://dirttrackmasters.com/category/intake-fuel)
- [Plastics & Bodywork](https://dirttrackmasters.com/category/plastics-bodywork)
- [Protection](https://dirttrackmasters.com/category/protection)
- [Suspension](https://dirttrackmasters.com/category/suspension)
- [Tires](https://dirttrackmasters.com/category/tires)

## Parts by bike (year / make / model)

- [All bikes](https://dirttrackmasters.com/fits): every make and model we have fitment data for
- [Honda CRF250R parts](https://dirttrackmasters.com/fits/honda-crf250r): 29 parts, 2018–2026 model years (one page per year at https://dirttrackmasters.com/fits/honda-crf250r/YEAR)
- [Honda CRF450R parts](https://dirttrackmasters.com/fits/honda-crf450r): 34 parts, 2018–2026 model years (one page per year at https://dirttrackmasters.com/fits/honda-crf450r/YEAR)
- [Honda CRF450RX parts](https://dirttrackmasters.com/fits/honda-crf450rx): 25 parts, 2018–2026 model years (one page per year at https://dirttrackmasters.com/fits/honda-crf450rx/YEAR)
- [Husqvarna FC 250 parts](https://dirttrackmasters.com/fits/husqvarna-fc-250): 27 parts, 2018–2026 model years (one page per year at https://dirttrackmasters.com/fits/husqvarna-fc-250/YEAR)
- [Husqvarna FC 450 parts](https://dirttrackmasters.com/fits/husqvarna-fc-450): 29 parts, 2018–2026 model years (one page per year at https://dirttrackmasters.com/fits/husqvarna-fc-450/YEAR)
- [Husqvarna TE 300 parts](https://dirttrackmasters.com/fits/husqvarna-te-300): 26 parts, 2018–2026 model years (one page per year at https://dirttrackmasters.com/fits/husqvarna-te-300/YEAR)
- [KTM 250 SX-F parts](https://dirttrackmasters.com/fits/ktm-250-sx-f): 28 parts, 2018–2026 model years (one page per year at https://dirttrackmasters.com/fits/ktm-250-sx-f/YEAR)
- [KTM 300 XC-W parts](https://dirttrackmasters.com/fits/ktm-300-xc-w): 26 parts, 2018–2026 model years (one page per year at https://dirttrackmasters.com/fits/ktm-300-xc-w/YEAR)
- [KTM 350 SX-F parts](https://dirttrackmasters.com/fits/ktm-350-sx-f): 28 parts, 2018–2026 model years (one page per year at https://dirttrackmasters.com/fits/ktm-350-sx-f/YEAR)
- [KTM 450 SX-F parts](https://dirttrackmasters.com/fits/ktm-450-sx-f): 33 parts, 2018–2026 model years (one page per year at https://dirttrackmasters.com/fits/ktm-450-sx-f/YEAR)
- [Kawasaki KX250 parts](https://dirttrackmasters.com/fits/kawasaki-kx250): 30 parts, 2018–2026 model years (one page per year at https://dirttrackmasters.com/fits/kawasaki-kx250/YEAR)
- [Kawasaki KX450 parts](https://dirttrackmasters.com/fits/kawasaki-kx450): 32 parts, 2018–2026 model years (one page per year at https://dirttrackmasters.com/fits/kawasaki-kx450/YEAR)
- [Suzuki RM-Z250 parts](https://dirttrackmasters.com/fits/suzuki-rm-z250): 24 parts, 2018–2026 model years (one page per year at https://dirttrackmasters.com/fits/suzuki-rm-z250/YEAR)
- [Suzuki RM-Z450 parts](https://dirttrackmasters.com/fits/suzuki-rm-z450): 24 parts, 2018–2026 model years (one page per year at https://dirttrackmasters.com/fits/suzuki-rm-z450/YEAR)
- [Yamaha YZ125 parts](https://dirttrackmasters.com/fits/yamaha-yz125): 26 parts, 2018–2026 model years (one page per year at https://dirttrackmasters.com/fits/yamaha-yz125/YEAR)
- [Yamaha YZ250 parts](https://dirttrackmasters.com/fits/yamaha-yz250): 31 parts, 2018–2026 model years (one page per year at https://dirttrackmasters.com/fits/yamaha-yz250/YEAR)
- [Yamaha YZ250F parts](https://dirttrackmasters.com/fits/yamaha-yz250f): 34 parts, 2018–2026 model years (one page per year at https://dirttrackmasters.com/fits/yamaha-yz250f/YEAR)
- [Yamaha YZ450F parts](https://dirttrackmasters.com/fits/yamaha-yz450f): 35 parts, 2018–2026 model years (one page per year at https://dirttrackmasters.com/fits/yamaha-yz450f/YEAR)

## Brands

- [AS3 Performance](https://dirttrackmasters.com/brand/as3-performance)
- [Acerbis](https://dirttrackmasters.com/brand/acerbis)
- [Boyesen](https://dirttrackmasters.com/brand/boyesen)
- [D.I.D](https://dirttrackmasters.com/brand/did)
- [Dunlop](https://dirttrackmasters.com/brand/dunlop)
- [FMF](https://dirttrackmasters.com/brand/fmf)
- [Flo Motorsports](https://dirttrackmasters.com/brand/flo-motorsports)
- [Galfer](https://dirttrackmasters.com/brand/galfer)
- [Honda](https://dirttrackmasters.com/brand/honda)
- [Husqvarna](https://dirttrackmasters.com/brand/husqvarna)
- [KTM](https://dirttrackmasters.com/brand/ktm)
- [Kawasaki](https://dirttrackmasters.com/brand/kawasaki)
- [Michelin](https://dirttrackmasters.com/brand/michelin)
- [Pro Circuit](https://dirttrackmasters.com/brand/pro-circuit)
- [ProTaper](https://dirttrackmasters.com/brand/protaper)
- [Renthal](https://dirttrackmasters.com/brand/renthal)
- [Suzuki](https://dirttrackmasters.com/brand/suzuki)
- [TM Designworks](https://dirttrackmasters.com/brand/tm-designworks)
- [Twin Air](https://dirttrackmasters.com/brand/twin-air)
- [UFO Plast](https://dirttrackmasters.com/brand/ufo-plast)
- [Vertex](https://dirttrackmasters.com/brand/vertex)
- [Wiseco](https://dirttrackmasters.com/brand/wiseco)
- [Yamaha](https://dirttrackmasters.com/brand/yamaha)

## Braking

- [AS3 Performance Braided Brake Lines](https://dirttrackmasters.com/product/as3-performance-braided-brake-lines): AS3 Performance, $52.00 USD, in stock
- [Galfer Rear Wave Brake Rotor](https://dirttrackmasters.com/product/galfer-rear-wave-brake-rotor): Galfer, $119.20 USD, in stock
- [Galfer Tsunami Oversized Front Rotor Kit](https://dirttrackmasters.com/product/galfer-tsunami-oversized-front-rotor-kit): Galfer, $231.20 USD, in stock

## Drive Chains

- [D.I.D ERT3 Non O-Ring Gold Chain 520](https://dirttrackmasters.com/product/did-ert3-non-o-ring-gold-chain-520): D.I.D, $92.76 USD, in stock
- [D.I.D VT2 X-Ring Enduro Chain 520](https://dirttrackmasters.com/product/did-vt2-x-ring-enduro-chain-520): D.I.D, $111.96 USD, in stock
- [ProTaper PT520 Pro Series Chain](https://dirttrackmasters.com/product/protaper-pt520-pro-series-chain): ProTaper, $87.99 USD, in stock
- [ProTaper Race Spec Aluminum Sprocket](https://dirttrackmasters.com/product/protaper-race-spec-aluminum-sprocket): ProTaper, $55.96 USD, in stock
- [Renthal R1 Works Chain 520](https://dirttrackmasters.com/product/renthal-r1-works-chain-520): Renthal, $71.96 USD, in stock
- [Renthal Twinring Rear Sprocket](https://dirttrackmasters.com/product/renthal-twinring-rear-sprocket): Renthal, $95.96 USD, in stock
- [TM Designworks Factory Edition Chain Guide](https://dirttrackmasters.com/product/tm-designworks-factory-edition-chain-guide): TM Designworks, $79.96 USD, in stock

## Engine Rebuild Kits

- [Honda HRC Race ECU Camshaft Kit](https://dirttrackmasters.com/product/honda-hrc-race-ecu-camshaft-kit): Honda, $680.00 USD, in stock
- [Vertex Big Bore Piston Kit 270cc](https://dirttrackmasters.com/product/vertex-big-bore-piston-kit-270cc): Vertex, $199.96 USD, in stock
- [Vertex High Compression Piston](https://dirttrackmasters.com/product/vertex-high-compression-piston): Vertex, $172.00 USD, in stock
- [Vertex Top-End Rebuild Kit](https://dirttrackmasters.com/product/vertex-top-end-rebuild-kit): Vertex, $151.96 USD, in stock
- [Wiseco Complete Bottom End Kit](https://dirttrackmasters.com/product/wiseco-complete-bottom-end-kit): Wiseco, $319.96 USD, in stock
- [Wiseco Performance Clutch Basket](https://dirttrackmasters.com/product/wiseco-performance-clutch-basket): Wiseco, $231.20 USD, in stock
- [Wiseco Racer Elite Piston Kit](https://dirttrackmasters.com/product/wiseco-racer-elite-piston-kit): Wiseco, $207.96 USD, in stock
- [Yamaha GYTR High-Flow Cylinder Head](https://dirttrackmasters.com/product/yamaha-gytr-high-flow-cylinder-head): Yamaha, $1,039.99 USD, in stock

## Exhaust Systems

- [FMF Factory 4.1 RCT Titanium Slip-On](https://dirttrackmasters.com/product/fmf-factory-41-rct-titanium-slip-on): FMF, $479.99 USD, in stock
- [FMF Gnarly 2-Stroke Pipe](https://dirttrackmasters.com/product/fmf-gnarly-2-stroke-pipe): FMF, $231.99 USD, in stock
- [FMF Megabomb Titanium Header](https://dirttrackmasters.com/product/fmf-megabomb-titanium-header): FMF, $279.99 USD, in stock
- [Pro Circuit 304 Factory Sound Silencer](https://dirttrackmasters.com/product/pro-circuit-304-factory-sound-silencer): Pro Circuit, $135.96 USD, in stock
- [Pro Circuit T-6 Stainless Steel Exhaust](https://dirttrackmasters.com/product/pro-circuit-t-6-stainless-steel-exhaust): Pro Circuit, $719.96 USD, in stock
- [Pro Circuit Ti-6 Pro Full Titanium System](https://dirttrackmasters.com/product/pro-circuit-ti-6-pro-full-titanium-system): Pro Circuit, $959.96 USD, in stock

## Handlebars & Controls

- [AS3 Performance Forged Brake Lever](https://dirttrackmasters.com/product/as3-performance-forged-brake-lever): AS3 Performance, $36.00 USD, in stock
- [Flo Motorsports Folding Clutch Lever](https://dirttrackmasters.com/product/flo-motorsports-folding-clutch-lever): Flo Motorsports, $63.96 USD, in stock
- [Flo Motorsports Pro Series Footpegs](https://dirttrackmasters.com/product/flo-motorsports-pro-series-footpegs): Flo Motorsports, $119.96 USD, in stock
- [Husqvarna Factory Racing Titanium Pegs](https://dirttrackmasters.com/product/husqvarna-factory-racing-titanium-pegs): Husqvarna, $199.20 USD, in stock
- [ProTaper Contour 1-1/8" Handlebars](https://dirttrackmasters.com/product/protaper-contour-1-18-handlebars): ProTaper, $79.99 USD, in stock
- [ProTaper EVO 1-1/8" Handlebars](https://dirttrackmasters.com/product/protaper-evo-1-18-handlebars): ProTaper, $92.79 USD, in stock
- [ProTaper Micro Handlebar Kit](https://dirttrackmasters.com/product/protaper-micro-handlebar-kit): ProTaper, $111.99 USD, in stock
- [ProTaper Pillow Top Lite Grips](https://dirttrackmasters.com/product/protaper-pillow-top-lite-grips): ProTaper, $15.99 USD, in stock
- [Renthal Fatbar 1-1/8" Handlebars](https://dirttrackmasters.com/product/renthal-fatbar-1-18-handlebars): Renthal, $95.96 USD, in stock
- [Renthal Kevlar Half-Waffle Grips](https://dirttrackmasters.com/product/renthal-kevlar-half-waffle-grips): Renthal, $19.96 USD, in stock
- [Renthal Twinwall 997 Handlebars](https://dirttrackmasters.com/product/renthal-twinwall-997-handlebars): Renthal, $119.96 USD, in stock

## Intake & Fuel

- [Boyesen Rad Valve System](https://dirttrackmasters.com/product/boyesen-rad-valve-system): Boyesen, $151.96 USD, in stock
- [Boyesen Supercooler Water Pump Kit](https://dirttrackmasters.com/product/boyesen-supercooler-water-pump-kit): Boyesen, $159.96 USD, in stock
- [Twin Air Dual Stage Air Filter](https://dirttrackmasters.com/product/twin-air-dual-stage-air-filter): Twin Air, $26.36 USD, in stock
- [Twin Air Powerflow Throttle Body Kit](https://dirttrackmasters.com/product/twin-air-powerflow-throttle-body-kit): Twin Air, $119.96 USD, in stock

## Plastics & Bodywork

- [Acerbis Full Plastic Kit (OEM Colors)](https://dirttrackmasters.com/product/acerbis-full-plastic-kit-oem-colors): Acerbis, $127.96 USD, in stock
- [Acerbis X-Grip Frame Guards](https://dirttrackmasters.com/product/acerbis-x-grip-frame-guards): Acerbis, $39.96 USD, in stock
- [UFO Plast Complete Restyled Plastic Kit](https://dirttrackmasters.com/product/ufo-plast-complete-restyled-plastic-kit): UFO Plast, $119.96 USD, in stock
- [UFO Plast Vented Front Fender](https://dirttrackmasters.com/product/ufo-plast-vented-front-fender): UFO Plast, $27.96 USD, in stock

## Protection

- [AS3 Performance Aluminum Bash Plate](https://dirttrackmasters.com/product/as3-performance-aluminum-bash-plate): AS3 Performance, $116.00 USD, in stock
- [Acerbis Carbon Fiber Skid Plate](https://dirttrackmasters.com/product/acerbis-carbon-fiber-skid-plate): Acerbis, $151.96 USD, in stock
- [Flo Motorsports Radiator Braces](https://dirttrackmasters.com/product/flo-motorsports-radiator-braces): Flo Motorsports, $95.96 USD, in stock
- [TM Designworks Baja Skid Plate](https://dirttrackmasters.com/product/tm-designworks-baja-skid-plate): TM Designworks, $111.96 USD, in stock

## Suspension

- [KTM SXS Factory Triple Clamps](https://dirttrackmasters.com/product/ktm-sxs-factory-triple-clamps): KTM, $479.99 USD, in stock
- [Kawasaki KXF Pro Circuit Linkage Arm](https://dirttrackmasters.com/product/kawasaki-kxf-pro-circuit-linkage-arm): Kawasaki, $180.00 USD, in stock
- [Suzuki RM-Z Works Showa Fork Kit](https://dirttrackmasters.com/product/suzuki-rm-z-works-showa-fork-kit): Suzuki, $2,800.00 USD, in stock

## Tires

- [Dunlop Geomax AT81 Enduro Rear Tire](https://dirttrackmasters.com/product/dunlop-geomax-at81-enduro-rear-tire): Dunlop, $116.76 USD, in stock
- [Dunlop Geomax MX34 Front Tire (80/100-21)](https://dirttrackmasters.com/product/dunlop-geomax-mx34-front-tire-80100-21): Dunlop, $111.96 USD, in stock
- [Dunlop Geomax MX34 Rear Tire (110/90-19)](https://dirttrackmasters.com/product/dunlop-geomax-mx34-rear-tire-11090-19): Dunlop, $135.96 USD, in stock
- [Michelin StarCross 6 Hard Rear Tire](https://dirttrackmasters.com/product/michelin-starcross-6-hard-rear-tire): Michelin, $119.96 USD, in stock
- [Michelin StarCross 6 Medium Soft Front](https://dirttrackmasters.com/product/michelin-starcross-6-medium-soft-front): Michelin, $100.76 USD, in stock