Parts/Drivetrain/Pinion gears/Arrma CNC Steel Mod 0.8 Pinion Gear (1/8" Bore) (11T)
Arrma CNC Steel Mod 0.8 Pinion Gear (1/8" Bore) (11T)
Arrma

Arrma CNC Steel Mod 0.8 Pinion Gear (1/8" Bore) (11T)

Part # ARA3110731.5(2)
Where to buy
$6.99
AMain Hobbies
Seen Oct 12, 2026
$6.99Buy
Prices are as last seen at the store; stock is not tracked.

About this part

This is an Arrma CNC Steel Mod 0.8 Pinion Gear intended for use with the Infraction 4WD MEGA Truck. This pinion uses a 1/8" bore and is a Mod 0.8 gear pitch. 

Features:
  • Strong and durable steel for long-lasting performance in extreme RC conditions
  • Precision CNC machined
  • Wide tooth profile for smooth operation
  • Suits 1/8" (3.175mm) motor shaft diameter
  • Laser etched with tooth count for easy identification
  • Precision manufactured threaded set-screw hole
  • 4x4mm set screw included
Includes:
  • (1) 0.8 Mod Pinion Gear
  • (1) Set Screw (4x4mm) 

Reviews1.5 · 2 reviewsacross all options

William BecknerVerified owneron Arrma CNC Steel Mod 0.8 Pinion Gear (1/8" Bore) (17T)

If you have a 3.175mm/18 inch shaft this pinion fits sloppy and wobbles, completely useless, I put it on a Fusion 2 in 1 pro motor, what's worse, to return the gear Amain wants half of the original price of the gear for postage to send it back, shipping for returns on defective parts should be free.

Roxanna ArningVerified owneron Arrma CNC Steel Mod 0.8 Pinion Gear (1/8" Bore) (11T)

"Suits 1/8" (3.175mm) motor shaft diameter" 3.3mm is not 1/8" Arma disappoints again.

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