The Kyosho UB005 front wheel shaft replaces the factory plastic part on the Ultima RB7.5 with precision-machined aluminum to extend service life and tighten steering feel. Its stronger construction reduces play at the wheel for more consistent turn-in and improved lap pace during club events. The part is made to fit the RB7.5 chassis without modification and helps deliver firmer front-end feedback on paved tracks.
Aluminum components offer a high strength-to-weight ratio, so fitting the UB005 reduces flex without adding excessive mass. Swapping in metal parts typically sharpens initial steering response and makes setup adjustments more predictable. For racers wanting repeatable handling and lower wear on front-end parts, the Kyosho UB005 is a sensible upgrade.
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