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Thumpstar - 20mm Cast Chain Adjuster Block Set

Vital Information
Part No TMP-3840
Stock Level 2 Left

Replacement cast set of chain adjusters for Thumpstar pitbikes with 20mm rear axle 


  • All 2020+ Thumpstar models EXCEPT TSB-C 70

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Since 2004, every purchase from TBolt USA includes access to technical support from our staff of experts and our online Pit Bike Technical Info Database!

We have all necessary support parts on hand.

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