The Dinan Valved Axle-Back Exhaust upgrades the rear exhaust section of the G87 BMW M2 with 76mm 100% T304 stainless steel tubing, enlarged from the stock 70mm to cut backpressure and free up flow. It retains the factory computer-controlled exhaust valves, so closed valves route gas through the Dinan muffler and out the inner tips for subdued low-speed cruising, while open valves bypass the muffler under load for a near straight-pipe roar. Absorption and reactive drone abatement technologies keep cabin resonance in check, and the complete system runs 6 pounds lighter than stock. Peak gains reach +6 HP and +5 lb-ft, finished with four double-walled 4.5-inch (114mm) clamp-on tips laser engraved with the Dinan logo.
Specifications
| Type | Valved axle-back exhaust |
| Position | Rear (axle-back section) |
| Material | 100% T304 stainless steel |
| Tubing Diameter | 76mm (vs 70mm stock) |
| Tips | Quad 4.5in (114mm) double-walled clamp-on, laser-engraved Dinan logo |
| Tip Finish | Black ceramic coated |
| Power Gain | +6 HP / +5 lb-ft (max) |
| Weight Savings | 6 lb lighter (38 lb vs 44 lb stock) |
| Part Number | D660-0100-BLK |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2023-2026 | BMW | M2 | Base |
Shipping
- Orders placed before 3 PM ET typically ship the same business day. Larger items ship within 1 to 3 business days.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Special order items follow a lead time we confirm with you individually before the order is committed.
- Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
- Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
- Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
- Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
- Product images may be representative. The SKU and specifications in the listing are what ships.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Returns & Refunds · Warranty
