Vulcanworks

An overtightened primary chain is known to cause premature failure of the engine, transmission and primary bearings as well as other complications.
Usually, the factory automatic primary chain tensioner is the culprit.
Our manually adjusted Primary Chain tensioner helps prevent premature engine and transmission bearing failure by allowing proper chain tension of 5/8" to 7/8" free play when cold.

Fits  2007-16 FLT & FLH Touring Bikes

Adapts 1984-1999 3/4" Timken bearing rear wheels(9 Spoke mags or wire wheels) to be used on 2006-2017 Dyna
Wheels will drop in place of your current wheel, using our new conversion axle and axle spacers.
No other change needed.
Adapters included to use 2000-Up Brake Disks

Replacement Adjusting Assembly for #4628 32T Primary Chain Adjuster
Heat Treated Steel

Replacement Tensioner Shoe for #4628 32T Primary Chain Adjuster
Nylon 6/6

Replacement Tensioner Shoe for #4635 Touring Adjuster & #4627 Dyna and Softail Adjuster
Nylon 6/6

(2) .048" Thick Shims for fine tuning motor sprocket to clutch basket alignment.

Works with all Big Twin engines from 1958-2006 (except 2006 Dyna)

(2) .048" Thick Shims for fine tuning motor sprocket to clutch basket alignment.

Works with all 2006+ Twin Cam & M8 engines (except 2006 Touring & Softail)

Heat Treated and Ground 4140 Tool Steel

1970-99 Big Twin