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VehiclesRedcat Racing Ascent One-Piece BodyUpgradesSteel transfer gears with rear underdrive

Steel transfer gears with rear underdrive

Redcat Racing Ascent One-Piece Body · RER22767

These gears slow the rear axle relative to the front, which can help the front tires pull the truck into a climb or tight turn. The stronger underdrive choices also increase driveline scrub on firm surfaces, so choose a matched pair for the terrain rather than fitting the largest split by default.

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Parts & installation

Manufacturer documented
Vehicle
Redcat Racing Ascent One-Piece BodyRER22767
Position
center
Change
Selectable rear transfer gearing with matched steel gear pairs

Parts needed

Per stated vehicle assembly or complete kit
PartQty
RER31799Steel transfer underdrive gear set with top shaft1

Redcat-listed transfer-gear option. Use one matched rear gear pair at a time; advertised underdrive labels and calculated wheel-speed reductions use different conventions.

Installation notes

  • The set contains a top shaft and eight steel gears: 16T,17T,18T,20T,24T,26T,27T,28T.
  • Use 20T/24T at the front. The rear choices are matched 18T/26T, 17T/27T or 16T/28T pairs, advertised as 20%,28%,37% underdrive.
  • The Fusion edition already has nominal 20% rear underdrive; check your exact vehicle's existing gears before choosing a ratio. The alternatives in this set are not installed together.
  • Relative to the 20/24 front pair, the rear wheel-speed reductions are 16.92%,24.44%,31.43% respectively. Manufacturer labels use a different or unstated percentage convention.
  • Use the factory transfer-case procedure, preserve shaft pins, align the gears before closing the case and return the longer cover screw to the driver side.

Sources

Original manufacturer product or factory instructions
  • RER31799 supplies a top shaft and eight enumerated gears. The sold inventory does not mean every gear is fitted simultaneously.
Original manufacturer product or factory instructions
  • The Fusion manual documents its nominal 20% rear-underdrive configuration. Its older gear labels are separate from the RER31799 inventory.