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Purchasing Information:
After you place your order on this site, we will contact you to confirm your order details prior to payment being made. All orders will be processed and fulfilled by one of our authorised dealers. Rollies Speed Shop Distribution is a wholesale business and does not sell directly to the general public. For more info see the Purchasing Information page.
Features & Benefits:-
* 3.937in. Bore.
* 4-3/8in. Stroke.
* Pistons are compatible with stock conrods with tapered wristpin ends.
* S&S bore pistons are machined to such close tolerances that it is not necessary to measure the piston.
* Just bore cylinders to nominal diameter +/- 0.0005in. for correct clearance.
* Additionally, the low friction coating on the piston skirt makes taking measurements very difficult.
* 10.4:1 Compression Ratio with Stock He ad.
Tech Tips:-
* Follow Ring End Gap & Piston to Cylinder Clearances as per the supplied Manufacturers Instructions.
* Pull the engine down first & measure the existing bore to determine if oversize pistons are required PRIOR to purchase, we do not take back piston kits. The onus is on the assembling technician to validate the cylinders & required pistons.
Proudly Made in the USA by S&S Cycle !
MFR PART No: 920-0100
ROLLIES PART No: SS920-0100
Give us a call us on
(07) 3252 5381 and one of our
parts specialist’s will help
you get the parts you need.Â
