AXIAL CAPRA 1.9 Unlimited Brass Front Knuckle Arms heavy Edition -14pc set by GPM SCX3021X  [SCX3021X]

Brass front knuckle arms for crawlers

This 14pcs brass front knuckle arms set is an RC-scale upgrade designed for AXIAL Capra 1.9 Unlimited chassis. The kit uses brass outer portal housings and matching inner knuckle parts together with stainless steel fasteners to add measurable unsprung weight at each wheel, which changes vehicle balance and ground contact during slow rock-crawling maneuvers. The description below focuses on fit, installation considerations, and tuning roles rather than marketing claims.

The kit increases wheel-end weight by approximately 115g per wheel through the brass housings, which helps the tyre maintain contact over irregular terrain and can widen effective steering/crawl angles when used with compatible wheels that have an inner diameter large enough to accept the 43mm outer components. Because this is an RC accessory, ensure wheel bore and hub interfaces match before attempting installation.

Use this set when you need additional wheel-end mass for low-speed traction and improved tyre contact during technical crawling. Verify wheel bore clearance and fastener lengths before installation, and retorque after a short break-in run to confirm fitment.