🔧 Complete gear kit includes trap door, all gears, mainshaft, countershaft, shifter drum, detent components, bearings, snap rings, gaskets and hardware.
Engineered for significantly smoother shifting through a roller detent shift drum with reduced inertia and gear dog teeth featuring lead-in ramping for positive engagement.
Bearing door is machined from 6061-T6 aluminum and uses wider bearings with retainer plates for improved durability and serviceability.
Gearsets are made from 8620 steel, cut prior to heat treating and precision ground with diamond-coated tooling for quieter, longer-lasting operation.
Designed to lower engine rpm for smoother highway operation and increased fuel efficiency.
Made in the USA 🇺🇸.
Note: Exhaust bracket may require modification for fitment, and electronic speedometer recalibration (see part 2210-0391) must be completed after installation.