Complete T143 long block with S&S performance components; fits in stock chassis. Does not include carb/intake or ignition.
- Super Stock™ heads and crankcase
- Easy start 585 gear drive cams with redesigned cam cover
- TC3 oil pump and cam plate
- Made in the USA
- Intake system not included; compatible with stock or aftermarket systems
- '99-'05 style cylinder heads; '06 models require '99-'05 offset intake flanges
- Revised oil routing removes need for oil line kit on '99-'06 Touring models
High-compression long block; oil line installation kit required; no fuel or ignition systems included; fits stock-length intake manifolds (S&S manifold size 410); includes Super Stock™ heads and 640 gear drive cams; made in USA.
Drop-in T143 long block built with S&S components for a high-performance upgrade that fits stock chassis.
S&S T143 long block; includes cylinder heads, cam train, crankcases and oiling components. Does not include intake or ignition.
Four-gear set for gear-driven cams; includes secondary cam gears, outer cam drive gear, pinion drive gear, and mounting hardware.
Four-gear kit for gear-driven cams; includes secondary gears, cam drive, pinion, and mounting hardware. May increase valve-train noise — check clearances and follow S&S and Harley-Davidson procedures.
Turnkey V124 long-block for '84-'99 Evolution big twins or '70-'99 custom frames; includes S&S heads and forged internals.
Turnkey V124 long block for '84–'99 Evolution Big Twin and '70–'99 custom frames; includes S&S heads, 640 cam, forged components; made in USA.
Four-gear set for gear-driven cams; includes two secondary cam gears, outer cam drive and pinion gears, plus mounting hardware. Made in the USA.
High-compression long block including Super Stock™ heads, crankcase, high-flow oil pump, cam cover and 640 gear drive cams; oil line kit required. No fuel or ignition systems included.
- Four-gear set with two secondary cam gears and mounting hardware.
- May increase valve train noise; oversized and undersized options available.
- Made in the USA.
- Installer must verify clearances and follow S&S and Harley-Davidson procedures.
Black Edition MK136 engine with 475G camshaft. Made in the USA. For oil-cooled applications; closed-course competition use only.
High-quality OEM replacement components for cam bearing assemblies.
Essential shims for precise cam setup. Made in the USA.
Machined 6061 billet aluminum cam cover kit with polished or chrome finish and chrome-plated points cover.
Complete 132" engine performance kit converts 114"/117" oil-cooled M8 to 132" with big-bore cylinders, performance-matched 550 cam, adjustable relief valve, and serviceable components.
Complete S&S top-end kit with heads, pre-fit forged pistons, and all necessary hardware for quick installation.