• Compatible with 6/7 speed mountain bikes.

• Durable aluminum alloy material and excellent shifting performance ensure safe and stable riding.

• Easy to use and maintain.

• Suitable for MTB,mountain bikes, road bikes, folding bicycles and so on.

Installation Tutorial:

• Apply solid grease to the lock point of the rear hook claw first, so as to make the installation more smooth and avoid damage to the lock point.

• Confirm that there is mutual stop between the rear locking screw and the rear claw, and then lock the rear transmission with a 5mm hexagon wrench.

• Use a 2.5mm Allen wrench to adjust the H screw so that the tooth tip of the upper guide wheel is aligned with the outside of the minimum flywheel tooth tip.

• Move the rear transmission to the maximum flywheel, adjust the L screw with a 2.5mm Allen wrench, so that the tooth tip of the upper guide wheel is aligned with the outside of the tooth tip of the largest flywheel.

• Use a 2.5mm Allen wrench to adjust the tension screw B, so that the distance between the upper guide wheel and the tooth tip of the largest flywheel can not be less than 6mm.