1200cc Big Bore Kit - Silver. Fits Sportster 1986-2021 with 883cc Engine.

Features & Benefits:-

* Will Not Fit XR1200

* Includes silver cylinders.

* Includes MLS Head Gaskets, Base Gaskets & Exhaust Gaskets.

* Includes assembly lube & instructions.

* No machining & No rebalancing.

* No cylinder head modifications.

* The dished piston dome keeps compression down to a streetable 9.4:1 with stock 883cc heads.

Tech Tip:-

* For the best performance CNC head porting, performance cams, exhaust & intake upgrades are recom mended

* EFI re-tuning is required.

Proudly Made in the USA by S&S Cycle !

MFR PART No: 910-0688

ROLLIES PART No: SS910-0688