RM ENGINEERING RACE
RM Engineering GT4+ Swan Neck Wing For BMW G87 M2
RM Engineering GT4+ Swan Neck Wing For BMW G87 M2
SKU:DRMGT4PLSWINGG87160
- 1X 1600 mm GT4+ Pre-preg Carbon Rear-wing Mainplane
- 1 Pair Standard Pre-preg Carbon Flat Endplates
- 1 Pair Swan-neck Wing Uprights
- 1 Pair Vehicle-specific Trunk Mounting Bases
- 1 Pair Shortened Trunk Lid Lift Support/Struct
- 1 Set Complete Installation Hardware
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WARRANTY POLICY
WARRANTY POLICY
Warranty & Inspection Policy
All products must be carefully inspected within seven (7) calendar days of delivery.
Any claim involving damage, defects, missing parts, or incorrect items must be submitted within this seven-day inspection period. Claims made more than seven days after delivery will not be eligible for warranty coverage, replacement, return, or refund.
Customers are responsible for inspecting the product and confirming that it is correct, complete, undamaged, and suitable for the intended vehicle before installation.
Products must not be installed if any damage, defect, fitment issue, or missing component is discovered. Please contact us before proceeding with installation.
Once a product has been installed on a vehicle, it is considered accepted by the customer and is no longer eligible for warranty coverage, return, replacement, or refund.
By purchasing and installing our products, the customer acknowledges and agrees to this Warranty & Inspection Policy.
GT4+ Swan Neck Wing Overview
The RM Engineering GT4+ Rear Wing uses a 1600 mm pre-preg carbon mainplane, standard pre-preg carbon flat endplates and swan-neck uprights with vehicle-specific trunk mounting bases. With the wing in position 2, full-vehicle CFD reports 245.0 lbf of integrated rear-wing downforce at 120 mph, V²-scaled. The installed result accounts for the flow reaching the wing over the G87 body.
Installed Performance on the G87
| Metric | 100 km/h CFD | 120 mph V²-scaled |
|---|---|---|
| Integrated wing downforce | 65.7 lbf | 245.0 lbf |
| Wing global X-direction drag | 3.3 lbf | 12.3 lbf |
| Downforce / global X drag | 19.87 | 19.87 |
| Wing setting | Position 2 | Position 2 |
Full-vehicle, straight-line CFD at 100 km/h (62.14 mph), with the rear wing in position 2. The 120 mph figures use V² scaling with a multiplier of 3.729583. This assumes unchanged aerodynamic coefficients, air density and vehicle attitude. The 120 mph condition was not independently simulated. Displayed forces are rounded, and reported ratios use the source report values.
The ratio of 19.87 uses integrated wing downforce divided by drag along the vehicle’s global X direction. It is specific to this installed G87 case and should not be treated as an isolated-airfoil efficiency rating. Wing surface drag also excludes aerodynamic changes induced elsewhere on the car.
Rear-Body Flow and Wing Inflow
The report identifies separation over the rear glass, which changes the direction and energy of the flow approaching the wing. This installation effect explains why isolated-wing curves should be read separately from the G87 full-vehicle results.
Wing Adjustment Reference
The supplied report includes a 63.0 in GT4+ isolated-wing reference and describes five standard settings from 0° to 6° in 1.5° increments. Its guidance recommends 3° or less for aerodynamic efficiency. The wider study curves extend to 15°, which does not represent additional standard adjustment positions.
The installed G87 simulation identifies its setting only as position 2. The report does not define the corresponding geometric angle. Confirm the supplied G87 wing and mounting arrangement against this adjustment reference before setting the angle.
Product Highlights
- 1600 mm pre-preg carbon mainplane for the BMW M2 G87
- Installed full-vehicle CFD result at wing position 2
- 245.0 lbf of wing downforce at 120 mph, V²-scaled
- Standard pre-preg carbon flat endplates and vehicle-specific trunk mounting bases
What’s Included
- 1 × 1600 mm GT4+ pre-preg carbon rear-wing mainplane
- 1 pair of standard pre-preg carbon flat endplates
- 1 pair of swan-neck wing uprights
- 1 pair of vehicle-specific trunk mounting bases
- 1 pair of shortened trunk-lid lift supports / struts
- 1 set of complete installation hardware
Vehicle Fitment and Installation
For BMW M2 G87 applications. Confirm trunk compatibility, reinforcement requirements and adjustment range before installation. Professional installation is recommended. Use the product-specific mounting instructions and evaluate the complete front and rear aero setup before track use.
Product Questions
What angle is position 2?
The G87 report does not specify its geometric angle. Position 2 should not be assigned an angle without the corresponding mounting or setup documentation.
Does the 245.0 lbf figure describe the rear-axle load?
No. It describes force on the wing surfaces. Rear-axle aerodynamic loading includes other surfaces and pitching-moment effects.
Can the isolated-wing curves predict my G87 downforce?
The G87 body changes the local wing inflow. Use the installed result for the analyzed setup, and treat isolated-wing curves as a separate reference.
CFD source: RM Engineering, BMW M2 G87 GT4+ Aerodynamic Information Packet, V4. Post-processing images retain their original legends and units. Image velocity scales use m/s where shown.