Shimano rear-derailleur pulley set for the named series — the two small toothed wheels that route the chain through the rear derailleur cage. The upper (guide) pulley sets shift-feel; the lower (tension) pulley keeps chain tension. Both are wear-parts on a high-mileage drivetrain and a service-kit replacement. This is the Shimano RD-6800 & RD-6870 Pulley Set.
Pulley Wheel
NT$ 879
Shimano rear-derailleur pulley set for the named series — the two small toothed wheels that route the chain through the rear derailleur cage. The upper (guide) pulley sets shift-feel; the lower (tension) pulley keeps chain tension. Both are wear-parts on a high-mileage drivetrain and a service-kit replacement. This is the Shimano RD-6800 & RD-6870 Pulley Set.
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