Disc Diameter: 355x32mm
Caliper Part Number: ST40
Piston Sizes: 38mm/42mm
StopTech's VAG MQB Type Chassis front Big Brake Kits include:
- Directional 355mm x 32mm StopTech Two-Piece Slotted Sport Rotors
- 4 piston StopTech ST-40 calipers in an Anodised Black
- StopTech Stainless Steel front brake lines
- StopTech Street Performance front brake pads.
StopTech Big Brake Kits improve aesthetics and exceed stock brake performance in three areas. First, larger rotors increase heat capacity. Second, improved brake cooling dissipates absorbed heat. Third, stiffer calipers and stainless steel lines reduce system compliance.
The key, however, is to increase heat capacity and reduce compliance without upsetting the stock front to rear brake torque ratio, also referred to as brake bias. Regardless of disc diameter, brake pedal ratio, brake pad material, or number of pistons in your calipers, your maximum deceleration is limited every time by the tire to road interface. If the brake upgrade you select adds too much front brake torque (as many do), it will drastically shift the brake bias too far forward and reduce your car's ability to utilize the maximum traction of the tires at all four corners (even on ABS equipped cars), increasing stopping distances dramatically. In addition, too many pistons or pistons that are too large will make the brake pedal much more difficult to modulate, which limits a driver's control of brake input.
This kit is suitable for the following vehicles
- Audi S3 Quattro 8V
- VW Golf Mk7 'R'