Wilwood's Forged Narrow Superlite 4R rear disc kit adds four-piston FNSL4R calipers, 12.88in two-piece rotors, and BP-10 compound pads to muscle car rear axles that require a parking brake. An internal shoe parking brake is built into the hat for strong static holding power and a clean installation. This kit runs red calipers with slotted rotors and balances rear braking to complement a front big brake upgrade.
| Type | Forged Narrow Superlite 4R 4-Piston Rear Parking Brake Kit |
| Position | Rear |
| Material | Forged aluminum calipers; two-piece rotors; BP-10 pads |
| Finish | Red calipers, slotted rotors |
| Size | 12.88in rotor diameter |
| Quantity | 1 (complete rear kit) |
| Part Number | 140-9221-R |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2005-2014 | Ford | Mustang | Base |
| 2012-2013 | Ford | Mustang | Boss 302 |
| 2008-2009 | Ford | Mustang | Bullitt |
| 2005-2014 | Ford | Mustang | GT |
| 2007-2008 | Ford | Mustang | Shelby GT |
| 2007-2014 | Ford | Mustang | Shelby GT500 |
| 2008-2009 | Ford | Mustang | Shelby GT500KR |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
