The Allison Shift Enhancer is the simplest, most effective kit available without having to pull the transmission. It literally gives the clutches more traction in the clutch packs. It allows for a quicker shift and 50 hp worth of additional holding power for the Allison 1000, 2000 and 2400 transmissions.
Bully Dog’s shift enhancers improve shift and line pressure while reducing slippage and lowering heat. The end result is a firmer, quicker shift which vastly improves & reduces torque converter and transmission clutch slippage while improving shifting. The Bully Dog shift enhancers also increase longevity of the transmission due to the much lower operating temperature.

Easy to install using basic hand tools!