Top End Rebuild KitsThere are 13 products.

Showing 1 - 13 of 13 items
  • Piston Kit with Standard Bore for KTM 50cc Pit Bikes, 2002-2015.
    $ 34.00 In stock
    KTM 50 SX Piston Kit Standard Bore

    Piston Kit with Standard Bore for KTM 50cc Pit Bikes, 2002-2008. Complete assembly including piston, wrist pin, needle bearing, rings and clips. Our kits are high quality, complete and ready to build right out of the box. You'll be able to take confidence that you'll have the precision components you need to get your toys running again, the right way. Be...

    $ 34.00
  • 50 Caliber Racing 47mm Standard Bore Piston Kit for Honda C70 CT70 CL70 SL70 XL70
    $ 45.00 In stock
    47mm Piston Kit Honda CT70 ATC70 SL70

    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.

    $ 45.00
  • Honda XR400 Top End Cylinder Kit 1996-2015
    $ 95.00 In stock
    Honda XR400 TRX400 Top End Cylinder Kit

    Complete 50 Caliber Racing top end rebuild kit for your Honda TRX400EX / TRX400X / XR400R! Our kits are high quality, complete and ready to build right out of the box. You'll be able to take confidence that you'll have the precision components you need to get your toys running again, the right way.

    $ 95.00
  • Yamaha YFM 80 top end rebuild kit 1985-2014 Badger Grizzly Raptor
    $ 99.00 Out of stock
    Top End Cylinder Kit Yamaha YFM80 Grizzly Raptor Badger

    50 Caliber Racing Yamaha YFM 80 top end cylinder kit 1985-2014. Complete top end rebuild kit for your Yamaha YFM 80 Badger, Raptor and Grizzly youth ATV. Our kits are high quality, complete and ready to build right out of the box.

    $ 99.00
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  • Honda NQ50 Spree / Elite Top End Cylinder Kit
    $ 79.99 Out of stock
    Honda NQ50 Spree / Elite Top End Cylinder Kit

    50 Caliber Racing Top End Cylinder Kit for Honda NQ50 Spree / Elite Scooters. Stock bore size replacement kit. Includes all gaskets and components necessary to rebuild your top end. Manufactured to OEM specifications. This kit is truly bolt on and can be installed by anyone with basic mechanical skills who is not afraid to turn some nuts and bolts....

    $ 79.99
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  • Complete Aftermarket Top end rebuild kit stock bore size for Polaris Sporstman 500 ATV with pin piston rings cylinder clips gask
    $ 299.00 Out of stock
    Polaris 500 Top End Rebuild Kit

    Polaris Sportsman 500 ATV Top End Cylinder Rebuild Kit with stock bore size and compression ratio. Includes all gaskets and components necessary to rebuild your top end. Manufactured to OEM spec, our kits are complete, high quality, and will extend the life of your toys for many more years of enjoyment.

    $ 299.00
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  • 50 Caliber Racing Top End Cylinder Kit for KTM 50 Air Cooled Pit Bikes 2002-2008 - Standard Bore
    $ 119.00 Out of stock
    KTM 50 Air Cooled Top End Cylinder Kit 2002-2008

    50 Caliber Racing Top End Cylinder Kit for KTM 50 Air Cooled Pit Bikes (2002-2008) are high quality, complete, and ready to build right out of the box. Standard bore bolt-on kit with no modifications required.

    $ 119.00
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  • 50 Caliber Racing Top End Cylinder Kit for KTM 50 Water Cooled Pit Bikes 2002-2008 - Standard Bore
    $ 119.00 Out of stock
    KTM 50 Water Cooled Top End Cylinder Kit 2002-2008

    50 Caliber Racing Top End Cylinder Kit for KTM 50 Water Cooled Pit Bikes (2002-2008). Our kits are high quality, standard bore, complete and ready to build right out of the box. Bolt-on kit with no modifications required.

    $ 119.00
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  • 50 Caliber Racing 60cc Big Bore Top End Kit with Head Included for Yamaha PW50 & QT50 Pit Bikes
    $ 89.00 Out of stock
    Yamaha PW50 Big Bore Kit 60cc With Head

    50 Caliber Racing 60cc Big Bore Top End Kit with Head included for Yamaha PW50 & QT50 Pit Bikes. This is a complete bolt on top end cylinder kit including head, ready to install out of the box. Includes a new cylinder head.

    $ 89.00
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  • 50 Caliber Racing High Volume Oil Pump - Honda Pit Bikes CRF50 XR50 CRF70 XR70
    $ 26.00 In stock
    High Volume Oil Pump - Honda Pit Bikes 1982-Up

    50 Caliber Racing high volume oil pump for Honda pit bikes CRF50 XR50 CRF70 XR70. Delivers up to 3 times the flow of the stock pump, which will help reduce wear and prolong the life of your engine. This pump is highly recommended when installing a big bore kit. Includes pump and gasket.

    $ 26.00
  • 50 Caliber Racing Top End Cylinder Kit for Yamaha PW80 - Stock Bore
    $ 89.00 Out of stock
    Yamaha PW80 Top End Rebuild Kit Stock Bore

    50 Caliber Racing Top End Cylinder Kit for Yamaha PW80 - Stock Bore for Yamaha PW80 Engines. Lightweight aluminum cylinder with steel sleeve. Oversize cooling fins on cylinder for efficient heat dissipation. Manufactured to OEM spec, our kits are complete, high quality and will extend the life of your toys for many more years of enjoyment. Fits Yamaha...

    $ 89.00
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  • 50 Caliber Racing Stock Bore, Stock Compression Top End Rebuild Kit for Yamaha Pee Wee 50 PW50 Pit Bikes
    $ 89.00 Out of stock
    Yamaha PW50 Top End Cylinder Kit

    50 Caliber Racing top end rebuild kit for Yamaha PW50 Pit Bikes have cast aluminum cylinder with black powder coating for a vintage Yamaha look. Standard compression and stock bore size for an all original spec replacement top end kit. Includes everything needed to rebuild your top end. These kits are very high quality and will last for years under normal...

    $ 89.00
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  • Race Head V2 Upgrade for Lifan 150cc 160cc YX GPX
    $ 359.00 Out of stock
    Race Head V2 Upgrade for Lifan 150cc 160cc YX GPX

    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...

    $ 359.00
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Showing 1 - 13 of 13 items