Sold as a pair — one left, one right, matched. Price is for the pair.
数量（对）
PRICE IS NOT FINAL
Prices are for the standard build and exclude freight.
Your final price is confirmed on the formal invoice before production.
F87 M2 rear rotors — 380 × 28 mm, sold as a pair.
The rear of an M2 does less braking than the front, but it has a second job the front does not: the parking brake lives inside the rear disc. On the F87 that drum sits inside the hat, so the rear disc wears two ways at once — friction face from braking, drum from the shoes.
Our rear pair is built like the front: a G3500 high-carbon ring on a 6061-T6 aluminium hat, bolted through stainless floating hardware. The drum surface is machined as part of the ring, so parking brake bed-in is the same as factory. 64.9 mm total height on a 75 mm centre bore, 5 bolt holes.
Measure the drum, not just the ring: this disc has two working surfaces, 380 mm at the friction ring and the drum bore inside the hat. A 370 mm rear disc from an F80 will bolt up and then foul the parking brake shoes.
F87 M2 rear, 380 × 28 mm with drum parking brake — OE 34118072019 and 34118072020. If you have the 370 × 24 mm rear disc, order that pair instead.
▸ Fixed or full-floating — which one?
The rear sees far fewer heat cycles than the front, so Fixed is the sensible default — quieter and cheaper. Full-floating is available if you track the car and run aggressive rear pads.
▸ Pads, bedding and ring replacement
Replace the parking brake shoes at the same time if the drum face is scored; new drum against worn shoes will drag. Bed the service brakes with 6–8 stops from 80 km/h, then set and release the parking brake a few times from walking speed.
▸ Lead time
Built to order. Production takes 10–12 days. Left and right are matched and marked before packing. Transit time depends on destination and service — we confirm shipping and delivery dates by email before you pay.
