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NOTE: XL883 models will require the use of XL1200 cylinder heads to achieve correct compression ratios.
NOTE: These S&S 1250cc conversion pistons for 1986-'16 HD® Sportster® Models increase the displacement of 883cc and 1200cc engines to 1250cc at 11.2:1 compression. May be used with stock 1200cc cylinder heads, but S&S CNC ported heads are recommended. Stock 1200cc cylinders and 1986-'2003 883cc cylinders may be bored to accept the 3-9/16" bore 1250cc pistons, but 2004-'16 883cc cylinders may not be used. Also available in a cylinder and piston kit.
(4) Cir clips (W5731)
(2) Wrist pins
(2) Top compression rings
(2) Second compression rings
(4) Oil rings
(2) Expander rings
|Bore Size||3.5625 in.|
Part 133490S fits the following machines