This is an optional Serpent SL8 2 Speed "Super Light" Gearbox Upgrade Set, and is intended for use with the Serpent 966. The current Serpent gearbox system has been in use for a long time, and the Serpent design has become the industry standard, with only small revisions over the years. Stronger engines, research, racing and new insights fueled this new gearbox design. The goal was to reduce rotating mass, provide smooth power delivery and increase reliability even further.
NOTE: Requires V2 type rear 2-speed shaft brackets to be mounted correctly. These are included as standard in the 966 and EVO. Same clutch and pinions-gears may be used.
- The SL8 gearbox has been used intensively since the 2011 WC in the USA.
- Aluminum brake-pulley adapter with 3 steel pins and new brake-disk are included
- Includes 44, 45 and 46 tooth 1st gear, and 48, 49 and 50 tooth 2nd gears
- 8x14x4mm bearings in 2-speed brackets seated in delrin bushings
- Much lighter and smaller spring-steel 2-speed adapter
- 8mm solid spring-steel shaft, one-way bearing runs directly on shaft
- Aluminum bell is stiffer and thicker to better withstand the forces of clutch shoes
- Bearing in the center creates even pressure
- Special grade aluminum material offers the best “grip” for the 2-speed shoes.
- Aluminum flange seats the lighter German made one-way bearing, and the bearing is seated more in the inside of the flange for better balance
- New shape 2-speed gears are lighter, more durable, with improved gear mesh and optimized module.
- New mono-type side pulley/pulley-adapter