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.
Audi RS3 8V / 8Y rear rotors — 309.9 × 22 mm, sold as a pair.
309.9 mm, not 310. The decimal is not a rounding artefact — it is the actual diameter, and it is what separates this disc from the 310 × 22 mm used on the TT RS. Half a millimetre of diameter and a different hat, and the two do not swap.
G3500 high-carbon ring at 309.9 × 22 mm, 20.0 mm minimum, 48.5 mm total height, 65 mm centre bore, 5 bolt holes, 6061-T6 hat. At 22 mm from new there is no resurfacing margin, so a scored face means replacement, not machining.
Digital calipers will read 309.9, not 310. If you measure 310.0 on a 58.6 mm hat you have the TT RS disc; if the hat is 48.5 mm, you have this one. The height decides it faster than the diameter does.
RS3 8V and 8Y rear, 309.9 × 22 mm — OE 1K0615601N. The TT RS 8J rear disc is 310 × 22 mm at a 58.6 mm hat and is a different part.
▸ Fixed or full-floating — which one?
Rear axle on a road car: Fixed. There is no meaningful gain from floating hardware at the rear unless the car is used on track.
▸ Pads, bedding and ring replacement
The rear disc on these cars is thin from new; at 20.0 mm it is done. Do not resurface it — there is not enough material left to stay within spec.
▸ 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.
