Engine

50 Caliber Racing brand new, top quality, aftermarket stock size replacement carburetor for Honda XR50 and CRF50 pit bikes. Manufactured to OEM spec for easy bolt on replacement. Restore lost power and fix cold start issues, while saving both time and money.

50 Caliber Racing high quality replacement carburetor with a 30mm intake bore opening. PZ30 model commonly used on many Chinese made 200-300cc ATVs, dirt bikes, pit bikes, dune buggies, and go karts. It will also usually work well on 1970s to 1980s vintage Honda dirt bikes.

*Please take a close look at the photos to determine if this will fit your specific application.

With the 50 Caliber Racing 24mm Honda Carburetor you can upgrade your bike and you'll be back to riding in no time! This carburetor is for the 1970s Vintage Honda Bikes but will also fit other bikes.

50 Caliber Racing 47mm Head 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.

50 Caliber Racing 52mm Head Gasket Kit for Chinese Lifan 110cc and 125cc Pit Bike and ATV Engines

OEM quality full gasket kit for 70cc Lifan and Honda Pit Bikes with 47mm piston. There are many Taiwanese and Chinese companies that produce knockoffs of this engine. Commonly used on scooters, dirt bikes, mini choppers, ATV's, quads, go-karts, and more. This kit contains every gasket you would need for a full overhaul.

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

50 Caliber Racing Head Gasket Kit for Honda CRF50F, XR50R, Z50 , CRF70R, XR70R with 52mm big bore kit and up to 108cc stroker crank (88cc-108cc) Installed. Complete Head Gasket Kit for Honda Pit Bikes with 88cc - 108cc Big Bore Engines. This gasket set will work with all honda 50 /70 stud pattern type.

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.

50 Caliber Racing Head and Clutch Gasket Kit for Honda CRF50F, XR50R, Z50, CRF70R, XR70R with 52mm big bore kit and up to 108cc stroker crank (88cc-108cc) Installed. Complete Head Gasket Kit for Honda Pit Bikes with 88cc - 108cc Big Bore Engines. This gasket set will work with all Honda 50 / 70 stud pattern type. Will also fit many 88cc-125cc Chinese Lifan engines.

50 Caliber Racing Stage 1 Big Bore Kits are top quality and come with everything you need to finish the job. This is a great way to pump up your Honda XR70 or CRF70. This kit is recommended for those who don't want to spend a fortune but still want to see a nice power increase over the stock engine. It can be installed by anyone with basic mechanical skills who isn't afraid to turn some nuts and bolts.

50 Caliber Racing Big Bore Kits are top quality and come with everything you need to finish the job. This is a great way to pump up your Honda XR70 or CRF70. This kit will easily double the stock horsepower on your bike. We recommend installing a high volume oil pump with this kit.

The Stage 1 Big Bore Kit from 50 Caliber Racing is top quality and comes with everything you need to finish the job. This is a great way to pump up your Honda Z50, XR50 or CRF50. This kit is recommended for those who don't want to spend a fortune but still want to see a nice power increase over the stock engine. It can be installed by anyone with basic mechanical skills who isn't afraid to turn some nuts and bolts.

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.

54mm (117cc) Head gasket kit

This is a full gasket kit from 50 Caliber Racing for 250cc CG250 Engines. The original manufacturer was Honda, and now there are many Taiwanese and Chinese companies that produce knockoffs of this engine. Commonly used on scooters, dirt bikes, mini choppers, ATV's, quads, go-karts, and more. This kit contains every gasket you would need for a full overhaul.

This is a full gasket kit from 50 Caliber Racing for 200cc CG200 Engines. The original manufacturer was Honda, and now there are many Taiwanese and Chinese companies that produce knockoffs of this engine. Commonly used on scooters, dirt bikes, mini choppers, ATV's, quads, go-karts, and more. This kit contains every gasket you would need for a full overhaul.

- Fits CG200 Engines made by Honda, Lifan, Cosmos, Kymco, Roketa, and all other manufacturers.

50 Caliber Racing 108cc stroker kit #5 for Honda CRF50, XR50, CRF70, XR70 pit bikes. Contains everything you need to convert your 88cc Race Head engine into a powerful open class 117cc engine with tons of torque. Includes crank, cylinder, piston kit, gaskets, 26mm carburetor and intake kit.

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.

ScooterX Replacement Oil Seals for 50cc GY6 Enginese with 39mm Cylinder Bore. Brand new oil seals for 50cc GY6 engines. These motors are commonly used in gas scooters, go karts, dune buggies, pocket bikes, and more. Fits 39mm bore, 50cc size GY6 engines. 

Dimensions:
- (2) 30mm OD x 16mm ID x 5mm W
- (1) 42mm OD x 27mm ID x 7mm W
- (1) 30mm OD x 16mm ID x 6mm W

88cc Race head big bore kit for your vintage Honda pit bike. Complete with a 52mm piston and cylinder, fully assembled race head with 25/22mm valves and revised chamber. 20mm carburetor with intake, filter and cable. High performance camshaft. Full gasket kit. Everything necessary to fulfill your need for speed!

- Z50A (1968-1978)
- CT70 (1969-1982)
- ATC70 (1973-1985)
- SL70 (1971-1973)
- XL70 (1974-1976)

50 Caliber Racing vintage stage 2 88cc big bore kit. Improved lightweight 52mm piston and cylinder design, with oversized cooling fins for efficient heat dissipation. A 20mm performance carb assembly, and all the gaskets needed for install.

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

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. 

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.