RPM Oversized Front Spindle Blocks for the ECX Boost, Circuit 2WD, Ruckus 2WD & Torment 2WD are designed to solve several issues. The first and most obvious is bearing life. RPM Oversized Front Spindle Blocks bump up the bearing size to 5x11mm bearings. Secondly, they are designed to last. Each set of RPM spindle blocks is molded from an ultra-durable, world-renowned blend of engineering-grade nylons to keep you rolling when everything else would have fallen apart.
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