Hot Racing +10mm wide track S2 hardened spring steel portal drive stub axles for the Traxxas TRX-4. These add 10mm to the track width on each side of the vehicle to add stability over rough terrain, increase steering clearance, and increase tire selection options. FEATURES: - Increases width of vehicle by 10mm on each side- Increases stability - Increases steering clearance- Increases tire selection- CNC machined S2 hardened spring steel axle- Aluminum +10mm spacer, blue anodized - Upgrades stock axles or provides a replacement for worn or damaged shafts- Fits front or rearYOU WILL RECEIVE: - Two (2) +10mm portal drive stub axles- Two (2) spacers- Two (2) M4 locknutsCOMMENTS: - Replaces Traxxas: portal drive stub axle (8255)- Hot Racing portal drive stub axle options include: STRXF39 (stock length), STRXF39W05 (+5mm length), STRXF39W10 (+10mm length)description revised by: SN July 18, 2018