Mini Parts, Mini Prices

Mini Cooper Brake Rotor Slotted Cryo Rear Left Gen2 JCW R55-R59

Mini Cooper Brake Rotor Slotted Cryo Rear Left Gen2 JCW R55-R59
Available to Order

StopTech® Cryogenic Treated Rear Left Slotted Sport Rotor - the one-piece performance upgrade rotors from StopTech, the best aftermarket performance upgrade rotors cryogenically treated for improved performance and extended life.  The added cost of the Cryo Treated Rotors will pay for itself with the extended life of both the rotors AND pads, with no significant change in braking effectiveness.

Sold Individually.

Rear Rotor: 280 x 10mm

Fits the following JCW models:

2007-2013 R56 JCW MINI Cooper S Hatchback
2008-2014 R55 JCW MINI Cooper S Clubman
2009-2015 R57 JCW MINI Cooper S Convertibles
2012-2015 R58 JCW MINI Cooper S Coupe
2012-2015 R59 JCW MINI Cooper S Roadster

Cryogenic treatment is a one-time stress relief process that involves both cold and heat cycling of the brake rotor. Using a proprietary computer-controlled process over a 24-hour period, the cryo machine gradually cools the rotors down to -300 º F, then gradually brings them up to over +300º F, and finally back to room temperature. This conditioning of the rotor permanently improves the performance and wear characteristics while extending rotor life. Cryo treatment typically adds 5-7 business days for processing.

StopTech® recognizes that great brakes need to look as good as they perform. Performance wheels and tires are best complemented with StopTech® Slotted, Cross-Drilled or Drilled & Slotted Sport Rotors.

StopTech® slotted, drilled and drilled & slotted brake rotors prevent glazing of the pads, add bite and improve wet and dry braking performance.

Every StopTech® Sport Rotor is produced from a high quality Centric Parts® blank casting and finished in a durable e-coating for corrosion resistance.


SLOTTEDCOOPER S294 x 22mm259 x 10mmG2NMB2650LG2NMB2650R G2NMB2651LG2NMB2651R
JCW316 x 22mm280 x 10mmG2NMB2656LG2NMB2656RG2NMB2657LG2NMB2657R
DRILLEDCOOPER S294 x 22mm259 x 10mmG2NMB2652LG2NMB2652R G2NMB2653LG2NMB2653R
COOPER S294 x 22mm259 x 10mmG2NMB2654LG2NMB2654R G2NMB2655LG2NMB2655R



  • Direct replacement, stock-sized rotors that fit stock calipers

  • Increased initial bite response

  • Improved wet weather response

  • Reduced brake pad glazing

  • OE vane designs, including casting part line location

  • Machining designs engineered for optimal rotor integrity

  • Double-disc ground for a consistent friction surface and better pad bed-in

  • Mill-balanced for vibration-free performance

  • Black e-coating on non-friction surfaces provides lasting, attractive looks

  • Enhances open wheel appearance

*E-Coated Finish*
Every SportStop rotor is finished with black e-coating on both sides of the hat, inside the the cooling vanes, and on the outside edge. E-coating is a superior electro-statically applied finish designed to withstand 400 hours of salt water exposure without rusting. This is especially important on both mounting faces of the hat where it touches the hub flange and back face of the wheel. Any accumulation of rust in these area can lead to installed lateral run out issues.

*Power Alloy Metallurgy*
Power Alloy metallurgy is exclusive feature of SportStop rotors. In specific vehicle applications, StopTech works with foundry partners to increase the molybdenum or carbon content of the castings, and to carefully control the cooling rate during production to reach targets for hardness and tensile strength.

*Cooling Vane Design*
Nearly all SportStop cross-drilled rotors have unique drilled hole patterns for the left and right sides of the vehicle. For these directional patterns, straight vane or pillar vane rotors are used to ensure that a drilled hole never touches a cooling vane.


MINI recommends the brake fluid be replaced every 2 years. See Mini Cooper Brake Fluid Pentosin DOT4 for replacement brake fluid.

For High Performance Brake Fluids, see the following: