MM Road & Track springs, 2005-14 Hardtop, Set
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MM Road & Track springs are a high-performance spring that will improve your Mustang's handling on the street, the open road, and the track. These aren't just a lowering spring, but were designed primarily to improve handling without significantly degrading ride quality. The optional short progressive-rate bumpstops allow significant lowering while maintaining good street manners. On the road and the track, these MM springs provide an excellent balance of handling and ride quality.
These springs are the heart of the MM Road & Track Grip Box for the S197 Mustang chassis. Testing showed the Road & Track Box pushed cornering power to above the 1.2g level while retaining ride quality suitable for a daily-driven Mustang.
- Lowers your Mustang for better appearance
- Increased spring rate reduces body roll when cornering and nose-dive when braking
- Lowers the center of gravity for better handling
- Quickens steering response
- Reduces understeer
- Spring rates chosen to maintain good level ride characteristics for reduced pitching on larger bumps
- 1.8"-2.0" front
- 1.9"-2.1" rear
Lowering amounts are approximate and will vary with year and model due to differences in car weight.
- Front: 320-360 lb/in. The rate is progressive and approximate, ramping up from 320 lb/in at ride height to 360 lb/in at 2" of spring compression (about 1.9" of wheel travel).
- Rear: 260-380 lb/in. The rate is progressive and approximate, ramping up from 260 lb/in at ride height to approximately 380 lb/in at 2" spring compression. Wheel travel is also 2" because the rear spring is on the axle.
For best handling balance
- Mustangs with the same size front and rear wheels/tires will benefit from fitting a larger front swaybar, such as the Mm5FSB-10. As the next best alternative, remove the stock rear swaybar.
- Mustangs fitted with wider rear wheels/tires than fronts will have good handling balance without any swaybar changes. To reduce body roll further, fit a complete swaybar set, such as the Eibach 35101.320.
- Choose a full set of 4 springs
- Add a front pair or rear pair of bumpstops
- Click the Add To Cart button
For best performance and ride quality, these springs should be matched with a set of performance struts and shocks. Read the Installation tab.
- MM's shorter, progressive-rate bumpstops
- Caster camber plates to ensure proper alignment after lowering
- Performance struts and shocks
A set of 4 MM Road & Track springs will:
- Lower your Mustang, improving appearance
- Reduce body roll when cornering and nose-dive when braking, because the spring rate is higher than stock springs
- Quicken the steering response because the spring rate is higher than any stock Mustang springs
- Lower the center of gravity for faster cornering
- Reduce understeer
- Progressive spring rate
- Powder-coated for long-lasting protection and great looks
All 2005-2014 S197 Mustang hardtops:
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