This GPM WR81202 set replaces stock components on the HPI WR8 with durable Steel#45 differential and bevel gears. The eight-piece kit is aimed at hobbyists seeking improved longevity and smoother acceleration response, and it fits Bullet MT 3.0 and Bullet ST Fluorescent X models.
HPI WR8 Fluorescent x Steel#45 Differential Gears & Bevel Gears - 8pcs set
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