Pit Bike Parts

15 tooth sprocket fits a 420 chain and has a 17 mm inner shaft hole.

13 tooth sprocket fits a 420 chain and has a 20 mm inner shaft hole.

ScooterX Replacement Oil Seals for 125-150cc GY6 Engines. Brand new oil seals for long case GY6 engines. These motors are commonly used in pit bikes, go karts and atvs. 

Dimensions:
- (2) 30mm OD x 19mm ID x 5mm W
- (1) 42mm OD x 27mm ID x 7mm W
- (1) 30mm OD x 19mm ID x 6mm W

50 Caliber Racing Dual Foam Performance Air Filter for 50-117cc Engines with 1.25" (30-34mm) Intake Diameter. High performance dual foam air filter, with 1.25 inch diameter outlet. Allows for better filtration and more airflow to your engine. Washable dual layer foam design which flows up to 10x as much air as stock, and will go much longer between cleanings. This filter fits 20mm High performance carburetors commonly used on Big Bore Kit equipped Honda CRF and XR 50cc Pit Bikes. The filter also fits any engine with an intake outer diameter of 1.25 inches (30-24mm).

50 Caliber Racing 47mm Head Gasket and Clutch Gasket Kit for 70cc Pit Bikes. OEM quality head gasket kit, for 70cc Lifan and Honda Pit Bikes with 47mm piston. Use for an engine rebuild or keep in the garage for spare parts, this a great kit to have on hand.

1.25 inch black foam filter (32mm)

50 Caliber Racing Performance Mesh Air Filter for CRF50 XR50 Pit Bikes. Performance mesh air filter fits all carburetors with a 1" OD round inlet. This filter will fit stock and aftermarket carburetors for XR50 and CRF50 Pit Bikes. Engine will be able to breathe better, giving you more airflow, and more power. If you are running an aftermarket pipe this filter is recommended for maximum performance. Will fit most carburetors that have a 1" inlet.

This kit from 50 Caliber Racing is to upgrade the cylinder head on stock YX/GPX 150 or 160 engines to our new Race Head V2. The addition of this new head will dramatically increase the performance of your stock engine! The addition of roller rocker arms and a new camshaft are the biggest changes followed by bigger valves and ports. The exhaust valve is now stainless as well (21-4N material). This all adds up to a cylinder head that puts out a professional level of performance yet is still affordable for the privateer rider.

50 Caliber Performance CDI Rev Box for Honda CRF50F XR50R Pit Bikes. This rev box will remove the stock rev limiter and allow your pit bike to max out its performance and rpms. Improved timing curve. Great bang for the buck! Fits all years of Honda XR50 and CRF50

Main jet kit designed to fit a 50 Caliber Racing 20mm performance carburetor (part #4211). This kit includes sizes: 82, 85, 87, 90, 92, & 95. The carburetor is equipped with an 89. Will also fit 20mm Keihin carburetors. Get your bike tuned to perfection with our high-quality jet kit.

50 Caliber Racing Replacement Gas Tank for Honda XR70 & CRF70 Pit Bikes. Includes cap and a new petcock valve. Don't waste your time messing around with gluing your cracked, leaking, dirty tank together. Just bolt a new one on, fill it up and ride!

50 Caliber Racing stock style replacement seat for your (2002-2008) KTM 50 pit bike. Medium firmness foam for a comfortable ride. Mild grip cover material will help you stay on your bike when the going starts to get rough. OEM style mounting for a bolt on fit.

Brand new 50 Caliber Racing rubber 2.50x10 tire for pit bikes with 10" wheels. Large knobs for maximum off road traction. Rubber compound provides good temperature & wear resistance. FIts the bikes listed below, plus many other dirt bikes and pit bikes that have 10" wheels.

Bottom End Case Gaskets for 1992-up Honda 50 and Chinese clone engines.

50 Caliber Racing Replacement Gas Tank For 110cc - 125cc Chinese Pit Bikes. Will fit many 110 - 125cc Chinese Pit Bikes from the following manufacturers. TAOTAO, APO, X-PRO, COOLSTER, PITSTER, SYX, MOTO, APOLLO, SSR MOTORSPORTS AND MANY MORE. Just make sure your existing tank matches the photos above!

Set of 2 pit bike rims, in 10 inch diameter size with 28 spoke holes. High quality 6061 Aluminum, 2" wide outside to outside. Includes 2 sets of 28 heavy duty spokes, enough to lace up one set of 10" wheels for your CRF50 pit bike. Available in BLACK, GOLD, RED or BLUE anodized finish. Fits CRF and XR 50 Pit Bikes, and anything else that requires a 10 inch wheel with 28 spokes.

Be sure to select color before ordering!

Set of 2 pit bike rims, one 10 inch and one 12 inch diameter size. High quality 6061 Aluminum.  Rear: 2" wide, Front: 2 11/16" outside to outside. Includes 2 sets of heavy duty spokes, enough to lace up one set of 10"/12" wheels for your CRF70 pit bike. Available in BLACK, GOLD, RED or BLUE anodized finish. Fits CRF and XR 70 Pit Bikes, and many others that have 10 inch rear / 12" front wheels with 28 hole hubs.

Be sure to select color before ordering!

50 Caliber Racing Performance camshaft for vintage Z50 Honda pit bikes and 70cc ATVs. This is a much more aggressive camshaft compared to the stock. Will increase power on a stock engine, and even better power can be made with a big bore modified engine up to 88cc. Works with a stock head.

Stock Replacement Handle Bars for Honda Monkey Z50 and CT70 Trail bikes. These are a high quality Taiwan made repops of the stock bars, not Chinese made like many out there. Chrome plated to look just like stock. If you want your old bike to look good as new, these are the bars you want. The fitment below is specific, so make sure you are buying the correct bars for your year. 

50 Caliber Racing 47mm Standard Bore Piston Kit for Honda C70 CT70 CL70 SL70 XL70 ATC70 vintage pit bikes. Complete assembly including 47mm piston, wrist pin, rings and circlips. Replaces oem Honda part number 13101-087-000.

50 Caliber Racing 27mm PZ27 Carburetor. This carburetor fits a large variety of 150cc to 250cc dirt bikes, go karts, ATVs and more. Intake throat diameter: 27mm, Bolt hole spacing: 48mm, Air intake mount diameter: 40mm.

50 Caliber Racing Honda Z50 Stage 1 vintage big bore kit. Improved lightweight 52mm piston and cylinder design, with oversized cooling fins for efficient heat dissipation. Includes all gaskets needed for install.

- Z50 (1968-1978)
- CT70 (1968-1981)
- ATC70 (1973-1985)
- TRX70 (1986-1987)
- SL70 (1971-1973)
- XL70 (1974-1976)

50 Caliber Racing 117cc stroker kit #6 for Honda CRF50, XR50, CRF70, XR70 pit bikes. Contains everything you need to convert your completely stock engine into a powerful open class 117cc engine with tons of torque. Includes crank, race head, camshaft, cylinder, piston kit, gaskets, 26mm carburetor and intake kit.

Racing Ignition Coil with single attachment for 50cc 125cc and 150cc GY6 engines found on scooters, Go Karts, Pit Bikes, Mini ATVs and other vehicles out there on the market. The length is 18 inches.