Direct replacement for the front brake shim for mountain bikes, easy installation, adjustable for 50 to 15cc, metal alloy.

1. Applicable Model: These front steering knuckles replace the brakes on 4WD/4WD karts from 50 to 150. Please confirm compatibility with your model before purchasing. 2. Safe Steering: The steering knuckles transmit and support the load to the front of the vehicle, resulting in stable steering and easier handling in challenging road conditions. 3. Robust Structure: Forged from high-hardness material and heat-treated, they offer a superior finish and ensure high hardness, resistance to bearings, wear, and durability. 4. Direct Replacement: These 3-bolt steering knuckles are used to replace or repair damaged original steering knuckles, providing improved driving performance for your kart. 5. Easy Installation: Designed for easy installation, fitting the steering knuckles requires only simple steps. Saves time and effort, allowing your vehicle to update quickly. Specification: Item Type: Steering Channel Nut Quantity: 1 pair (front left and right wheels) Material: Metal alloy Inner Diameter: Approx. 17 mm / 0.7 inches Fitment: 4-wheel drum brake adjustment Package List: 1 x pair of target axles Grades: Carefully check the size before purchasing. The tread pattern is measured manually; please allow for a margin of error of approximately 2 mm.