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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.
* 117in. Standard Compression – Flat Top Pistons
* Note: Crankcases must be bored to accept the larger 4-1/8in. bore cylinders
* Compression Ratios:
85cc Stock Heads = 10.9:1
89cc S&S Heads = 10.5:1
91cc S&S Heads = 10.3:1
95cc SE Heads = 10.0:1
* This big bore cylinder and piston kit contains S&S 4-1/8in. bore cylinders and forged flat topped pistons, rings, wrist pins, head and base gaskets. The cylinders are machined with the stock bolt pattern and ar e intended for use in stock crankcases of 2007-2017 Twin Cam engines.
* The stock 4-3/8in. stroke and 4-1/8in. bore result in a 117′ displacement.
* Cylinder finish is a durable wrinkle black powder coat. This cylinder kit may be used with stock or S&S cylinder heads with stock bolt pattern.
* For best performance, appropriate camshafts, performance air cleaner, performance exhaust and fuel system tuning are required.
Tech Tips:-
* Crankcases must be bored to ac cept the larger 4-1/8in. bore cylinders.
* Although not mandatory, we recommend adding an oil cooler to bikes ridden in warmer climates
* The 117in. cylinder kit will reduce the engine height ~.060in., this may require the stock manifold be shortened by sanding some material off each side of the intake runner
* S&S recommends retrofitting a Timken bearing SS31-4013 into 2003-2016 model crankcases with the use of a Timken sleeve, Jim’s #JM-956. A charging system spacer for 1999–2002 model year is also required. S&S # SS310-0761
MFR PART No: 910-0213
ROLLIES PART No: SS910-0213
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(07) 3252 5381 and one of our
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