![Grooved Rear Discs [Mk3 Focus ST] Interior Optional Carbon Fibre airbox lid](https://cdn.shopify.com/s/files/1/0367/2621/products/Mk3_RS_Rear_Disc1.jpg?v=1545309038)
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Optional Carbon Fibre airbox lid
To support our exhaust and for m235 / m260 owners that have already fitted aftermarket exhaust products
This was originally designed to remove the large and cumbersome sprung loaded tensioner and replace it with a lightweight version which is used to manually set the auxiliary belt to the desired tension removing the risk of the spring in the OEM part breaking or becoming tired and not delivering the required tension
A perfect pairing with mountune Forged Pistons
Grooved Rear Discs [Mk3 Focus ST] Interior Optional Carbon Fibre airbox lidThe mountune Rear Grooved Brake Disc Upgrade features a corrosion proof thermic black coating and a precision machined 8 groove design to help deglaze the brake pad face and help promote even pad wear. A direct replacement for mk3 Focus ST running the OE braking setup supplied as a pair. Features: Thermic anti corrosion coating Grooved design improves braking performance Direct replacement for OE Supplied as a pair Perfectly matched to mountune Fast