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Two screws
Suitable for racing preparation
Second layer of denser foam that captures the finer particles and promotes airflow
Top and bottom end rod bores case hardened to 58-62 RC to optimize bearing running surface
PROX forged pistons are made from a specific aluminum alloy which lowers frictions and maximizes reliability
PBR Staal standaard voortandwiel 560 - 420 Amount of teeth:13 teeth Two screwsPBR is an Italian manufacturer of high performance engine transmission parts, and collaborates with competition teams for most of its R&D activities. The production of gears and crown wheels of this brand is done in a very strict manufacturing process and with high quality materials, resulting in the best end product for the customer. PBR off road products are designed in hardened steel for maximum resistance to mud and corrosion.
