dirt bike Big Bore Kits

Latest Engine Reviews – You could win up to $500 for reviewing products!

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  Cometic Top End Gasket Set

  Titus in AZ

  Way better than I thought

  Doing a rebuild on my entire motor needed just a head gasket so got this thinking I should replace all my seals for the price I wasn't expecting everything to be this amazing all the rubber seated perfectly definitely worth the money.

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  Tusk Clutch Cover Gasket

  Marianne in VA

  Good seal

  Good seal. It has a good fit and thickness. It lined straight up and had no issues.

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  Tusk Clutch Kit With Heavy Duty Springs

  Justin in CA

  Tusk clutch plate & springs

  Good quality spring are stiffer than before comparable to EBC

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  Tusk Top End Gasket Kit

  Nicholas in MA

  Easy to work with, loved the gasket kit

  All of the gaskets fit great, came quick and product was good.

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  Wiseco Piston Kit

  Jack in ID

  Great pistons

  I love wiseco pistons. They always fit well, they look great (which feel reassuring when doing the top end rebuild). I will always buy wiseco pistons.

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  Hot Cams Valve Shim Kit

  David in OK

  Shims are Great

  These shims are super handy. They have all the sizes you need in a convenient organizer. Great quality product that cant be beat in my opinion.

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