Righetti 40 mm Axle (3mm) Keyways Needed?:Yes - I need Keys (4) K959-B a great option for low-horsepower

a great option for low-horsepower karts

with no additional sprocket or hardware

and outstanding on-track power for the Briggs 206 engine package

Output Bearing for Rotax Max Kart Engines

115mm: Okay

Righetti 40 mm Axle (3mm) Keyways Needed?:Yes - I need Keys (4) K959-B a great option for low-horsepower40mm Axle by Righetti Ridolfi, with 3mm wall thickness. Model KD 120, this axle is ideal for medium to lower horsepower applications, and comes in several stiffness's for racers using Righetti racing karts or other brands! Each axle is 40mm in diameter, and is 1040mm in length. The wall thickness is 3mm, and the material the axle is made of changes slightly depending on the stiffness desired. The axle is available in (3) stiffness Soft, Medium, or