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Crankshaft Zero Drag Seals by HRS

Set of two (2) high performance precision-machined, honed brass crankshaft seal inserts from HRS. One of the key ways to improve engine performance is to reduce internal friction and drag wherever possible. These inserts help the stock rubber crankshaft seals reduce their "death grip" on the crankshaft, while still preventing all air and mixture leakage. Several years of testing in RC applications has shown a typical performance gains of ~.2 HP and ~300 useable RPMs. Improves performance throughout the RPM range. Click here for installation instructions.

Will Fit Zenoah G23LH  G2D  G230RC  G260RC  G231PUH  G260PUH  G260PU  G231PUM  G260PUM GZ25N14  GZ25N23 G43L engines.

Chung Yang CY23RC  CY26RC  CY27RC  CY29RC  GP290 engines 

For more information, please visit this products webpage.

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