From HPI Racing:
17mm Hex Hub Conversion Set for the Savage XL.
17mm hex hubs decrease the stress on the wheels, helping to prevent stripped wheels when using high horsepower engines and motors. Super Heavy Duty steel axles are used for durability, machined lightweight aluminum hubs and wheel nuts are used for quick acceleration and anodized orange and black respectively for a custom look.
Designed for Savage cars using Super Heavy Duty Dog Bones and Diff Shafts. If your Savage is not already fitted with these, then you also need the following parts to complete the conversion:
2x #86246 – SUPER HEAVY DUTY DRIVE SHAFT 11x123mm (2pcs)
2x #86248 – SUPER HEAVY DUTY DIFF SHAFT 9x11x34mm (2pcs)