Arrowmax Ultra Mod 1 21T 5mm Shaft Spring Steel RC Pinion Gear 1/8 Scale - AM-601021

The Arrowmax AM-601021 is a Mod 1 pinion gear designed for 1/8 scale buggy applications with a 5mm shaft, machined from spring steel for durability under race conditions. Running a 21-tooth count, this pinion sits in the mid-range of typical 1/8 buggy gearing and is suited to drivers looking to fine-tune their drivetrain ratio for track conditions. Spring steel construction gives it the toughness to handle the torque output of brushless power systems common in 1/8 buggy racing.

Key Features

• Mod 1 tooth pitch — the standard for 1/8 scale buggy drivetrains, ensuring mesh compatibility with Mod 1 spur gears
• 21-tooth count for mid-range gearing, balancing acceleration and top speed across a variety of track layouts
• 5mm shaft bore is the widely used shaft diameter across 1/8 buggy platforms
• Spring steel construction resists wear and deformation under high-torque brushless motor loads
• Part number AM-601021 for straightforward reordering and cross-referencing

Compatible With

• 1/8 scale RC buggies with a 5mm motor shaft and Mod 1 spur gear
• Compatible with brushless and brushed motor setups using a 5mm output shaft
• Suitable for use with Mod 1 spur gears across common 1/8 buggy platforms

What's Included

• 1x Arrowmax AM-601021 21T Mod 1 pinion gear (5mm bore, spring steel)