It's time for some real talk: Most of the big brake kits on the market are fashion statements vs. performance enhancements. They provide no usable stopping power advantage at all. In fact, oversized brakes reduce overall vehicle performance and hurt ride quality, too. "Bigger is better" is very poor advice. Rather, for the Mk4 chassis, there is a sweet spot of value where form and function satisfy most drivers. That is the 312mm front and 256mm rear rotor size. This setup was supplied on Audi TT Quattros and some limited edition GTIs. The mighty R32 was supplied with even larger front rotors. However, they are actually a net disadvantage in most circumstances. For an excellent review of variations (worldwide), see this breakdown.

BRAKE FITMENT GUIDE (USDM):

VW Golf R32 | Audi TT 3.2 Quattro
Front: 334mm x 32mm vented two-piece disks w/twin piston(32mm/42mm) calipers
Rear: 256mm x 22mm vented disks w/single piston (38mm) calipers

Audi TT-Quattro (225hp) | VW Golf anniversary | Golf GTI 337
Front: 312mm x 25mm vented disks w/single piston (54mm) calipers
Rear: 256mm x 22mm vented disks w/single piston (38mm) calipers

Audi TT (180hp)
Front: 312mm x 25mm vented disks w/single piston (54mm) calipers
Rear: 232mm x 9mm solid disks w/single piston calipers

Golf GTI 1.8T | Jetta 1.8T | Golf GTI VR6 | Jetta VR6
Front: 288mm x 25mm vented disks w/single piston (54mm) calipers
Rear: 232mm x 9mm solid disks w/single piston calipers

Golf 2.0l 8v | TDI
Front: 280mm x 22mm vented disks w/single piston calipers
Rear: 232mm x 9mm solid disks w/single piston calipers

A high-performance brake system is composed of more than just rotors, of course. Additionally, the calipers play a critical role in stopping a car predictably and repeatedly from high speeds. Calipers supplied in these cars are made of heavy yet flexible cast iron. Except with 3.2l cars, they all house a single large piston to squeeze the pads against the rotor. Calipers that flex can't deliver full stopping power and feel unresponsive. Also, heavy brake parts hurt ride quality and tire traction over bumpy surfaces. In contrast, the optimal brake caliper is lightweight, very stiff verses. flexible, and will hold multiple small pistons. Together, they impart a stronger and more even force on the pads than a single large piston can deliver. We highly recommend an investment in Brembo 4-Piston calipers because they combine all the important technical features at an affordable price. Porsche thought well enough of these parts to supply them on Boxsters for years.




Product Image Item Name- Price
Brembo/Porsche 4-Piston Calipers set (w/pads)

Brembo/Porsche 4-Piston Calipers set (w/pads)

Brembo 4-Piston monoblock calipers powder coated gloss black and loaded with street pads with anti-vibration pad backing plates. Sold as a pair. Each...
$695.00

Add:

Brembo/Porsche Caliper Brackets (MK4 VW/MK1 TT)

Brembo/Porsche Caliper Brackets (MK4 VW/MK1 TT)

This pair of brackets adapts Brembo 4-piston calipers. Spacing works with oversized 312mm rotors for a big 17% increase in area swept by the...
$150.00

Add:

Banjo Bolt (Porsche to OEM VW brake lines)

Banjo Bolt (Porsche to OEM VW brake lines)

Use these banjo bolts to adapt Brembo/Porsche calipers to OEM Mk4 Volkswagen brake lines and aftermarket lines built to OEM fitment standard. R32...
$9.00

Add:

StopTech 312mm Front Disk: slotted

StopTech 312mm Front Disk: slotted

USRT recommends slotted rotors over drilled. That's because slotted brake rotors prevent glazing of the pads, improve initial "bite",...
$105.00

... more info

StopTech 288mm Front Disk: slotted

StopTech 288mm Front Disk: slotted

USRT recommends slotted rotors over drilled. That's because slotted brake rotors prevent glazing of the pads, improve initial "bite",...
$75.00

... more info

StopTech 256mm Rear Disk: slotted

StopTech 256mm Rear Disk: slotted

StopTech slotted brake rotors ensure superior braking for everyday driving, at the track, or sideways on the rally stage. Specialized Vac-U-Slot...
$69.00

... more info

StopTech 232mm Rear Disk: slotted

StopTech 232mm Rear Disk: slotted

StopTech slotted brake rotors ensure superior braking for everyday driving, at the track, or sideways on the rally stage. Specialized Vac-U-Slot...
$49.00

... more info

Front Brake Disk Upgrade, 280mm to 288mm

Front Brake Disk Upgrade, 280mm to 288mm

Front Brake Upgrade Kit. Converts from 280mm to 288mm 5x100. Includes rotors, calipers, pads, uprights, and hubs. 99-04 Golf/Jetta, New Beetle, Audi...
$650.00

... more info

Front Brake Disk Upgrade, 280mm to 312mm

Front Brake Disk Upgrade, 280mm to 312mm

Increase friction area by a very serious 24%. This 280mm to 312mm x 25mm 5x100 rotor includes GTI 337 drilled and slotted rotors, 1.8T/VR6 calipers,...
$795.00

... more info

Front Brake Disk Upgrade, 288 to 312mm

Front Brake Disk Upgrade, 288 to 312mm

Replace those 288mm stock rotors with these 312mm for a big 17%+ increase in friction area. Kit includes drilled and slotted rotors and caliper...
$350.00

... more info



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