Description

If you’re running a 1991-1999 Softail and want meaningful gains in acceleration and highway cruising efficiency, the JIMS 6-Speed Overdrive Transmission is a direct bolt-in solution that delivers both. The close-ratio first gear maximizes takeoff performance while the .86:1 overdrive sixth drops engine RPM on the highway, reducing noise and heat while improving fuel economy. Built from 8620 steel and CNC-machined with precision shifter dogs, this U.S.-manufactured transmission combines reliability with measurable real-world performance improvements.

What’s Included:

Transmission unit
Clutch cover gasket
Wiring harness with connectors
Seal and O-rings kit
Torco TG 89 racing gear oil
Installation instructions

Technical Specifications:

6-speed overdrive transmission
Close-ratio first gear
.86:1 overdrive sixth
8620 steel construction
CNC-machined shifter dogs
Lead-in ramp design
Optimized Softail fitment
1991-1999 Evolution compatible
U.S. manufactured assembly
Does not include front pulley
Ships 3-4 business days

Additional Requirements: Installation requires clutch-release rod, final drive sprocket, and Bel-Ray 85-140 gear lube (sold separately). Professional installation recommended.