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HOME » Twin Cam » Performance Kits » TC Bolt-On Big Bore Kits » 98" Bolt-On Big Bore Kit (Natural)

Revolution Performance

98" Bolt-On Big Bore Kit (Natural)

(Fits 1999-2006 88" Twin Cam style motorcycles)

    98" Bolt-On Big Bore Kit comes with:

  • NEW 3.938" all aluminum Nickel Silicon Carbide (NSC) plated cylinders in natural finish
  • Forged 10.5:1 compression ratio dome-top pistons (+7.5cc) or optional forged 9.75:1 compression ratio flat-top pistons
  • Cometic head gasket kit (.030) and base o-ring
  • The Revolution Performance 98" Twin Cam Bolt-On Big Bore Kit is the most reliable way to increase power and torque on your 1999-2006 88" Twin Cam engine. Each kit comes with our state of the art all aluminum NSC plated cylinders which last longer and run cooler than the OEM cylinders. The cylinders are matched with a premium forged piston available in two different compression ratios and a Cometic head gasket kit.

    The 98" Bolt-On Big Bore Kit requires no other engine modifications to install but can benefit from our other products and services. Click HERE for our 98" complete speed shop engine kit.

    ***NOTE: Compression ratio is dependent on the cylinder heads combustion chamber volume***


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