Parts/Drivetrain/Differentials & diff parts/Hot Racing Savage Hardened Steel Spiral Cut Ring & Pinion Gear (26/8T)
Hot Racing Savage Hardened Steel Spiral Cut Ring & Pinion Gear (26/8T)
Hot Racing

Hot Racing Savage Hardened Steel Spiral Cut Ring & Pinion Gear (26/8T)

Part # HRAHSF299X1.0(1)
Where to buy
$48.88
AMain Hobbies
Seen Oct 12, 2026
$48.88Buy
Prices are as last seen at the store; stock is not tracked.

About this part

This is an optional Hot Racing Savage Hardened Steel Spiral Cut Ring and Pinion Gear Set.

Features:

  • Steel is CNC machined and hardened
  • Precision machined spiral cut gears for increased torque transfer, smooth running, and less vibration and noise than conventional straight-cut
  • Speed tune ratio of 3.25:1

Includes:

  • One (1) 26 tooth diff spiral cut ring gear
  • One (1) 8 tooth spiral cut pinion gear

Specifications:
OD:
43.1mm

NOTES: HSF299X has an increased tooth engagement than its predecessor (HRAHSF299) for greater torque/power capability.

Reviews1.0 · 1 review

Alexander Richardson Hot Racing Savage Hardened Steel Spiral Cut Ring & Pinion Gear (26/8T)

Purchased these in the hopes of getting a high quality, quiet gearset. Was very disappointed I wasted my money. The gears are not machined correctly and have a ton of runout making them unusable and unable to be shimmed to fix it. The axial runout of the crown gear when installed on the diff cup with no gasket is nearly 0.014" ! In a gear set like this, excess play or too tight of mesh can be crucial; unfortunately no matter what I did, these would not measure up to even the stock HPI gears or other knockoffs from ebay. I messed with them for weeks before deciding it wasn't worth trying to fix them so they would work properly. Now they work perfectly for filling a spot in my toolbox.

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