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S&S Cycle

S&S 98" Big Bore Kit For Harley Big Twin 1999-2006

Item: P318763
0 Read 0 Reviews 11 Q&As Write a Review
$1,064.66
$1,182.95
Save $118.29 10%
Rebate Available! View Details

This product is vehicle specific.
Select a bike to ensure fitment.

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Product Details

This product is legal in California only for racing vehicles which may never be used, registered or licensed for use upon a highway.

S&S Cycle 98" Big Bore Kit For Harley Big Twin

You know the saying - "There's no replacement for displacement!"

Features:

  • Kit yields excellent results with stock cylinder heads
  • Features the largest bore (3.927") that can safely be used in a cylinder with stock spigot diameter
  • Even though stock cylinders can be bored to fit the 3.927" pistons, the included S&S cylinders feature a much stronger liner to stand up to the added power
  • Easy installation: no need to bore or split existing cases, just swap the cylinders
  • Specifications: 3.937" bore, 4" stroke, 98" displacement, 9.8:1 compression ratio with stock heads
  • Kits include cylinders, pistons, rings and gaskets (head, base and exhaust)
  • Black or silver powder-coat finish with polished fins
  • Increased fin area for better heat dissipation
  • Valve pocket recessed in S&S pistons are enlarged for oversize valves and higher lift cams
  • Maintains stock engine height and stock piston weight
  • Made in the USA
Made in the USA
Product Style RevZilla Item # MFR. Product # Availability
Product Style Black RevZilla Item #1073410 MFR. Product #910-0481 AvailabilityIn Stock: Requires 1-2 business days of lead time prior to shipment
Product Style Silver RevZilla Item #1073411 MFR. Product #910-0482 AvailabilityIn Stock: Requires 1-2 business days of lead time prior to shipment
This product is vehicle specific.
Select a bike to ensure fitment.
Fitment Notes & Exceptions
  • These parts require a good deal of technical skill to install correctly - it is the responsibility of the person assembling the parts to check all clearances and assembly specifications
  • S&S highly recommends installing a performance cam for easier starting and better engine performance
  • These kits require tuning - when used on EFI models, S&S recommends the Dynojet Power Vision flash tuner
This Product Fits
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Product Description
Part Numbers
Fitment
0 Customer Reviews
11 Questions & 6 Answers

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