The Serpent 803185 pulley shim provides a tight, repeatable fit for mid-centre drivetrain arrangements. Its 18-tooth design helps keep power transfer consistent while trimming excess friction in the gear train.
Produced by Serpent, this 18T shim aids accurate gear alignment across compatible chassis. It is handy for setups that include overdrive conversions, helping the drivetrain run more predictably at high revs.
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