Tesla Model 3 Big Brake Kit Upgrade / TTSPORT Classic 8703S

Electric performance sedans put a lot of demand on their brakes — instant torque, heavier curb weight from the battery pack, and regenerative braking that can mask how the friction brakes are actually holding up. This Tesla Model 3 was fitted with the TTSPORT TT8703S big brake kit, an OEM+ upgrade built to bolt in behind the factory wheel without spacers.

The goal of a kit like this isn't to turn a street car into a track car overnight — it's to give the driver a firmer pedal, more consistent bite, and hardware that can take repeated hard stops without fading the way a stock setup can.

Vehicle & Kit Specs

Why It Works

• A forged fixed caliper doesn't flex the way a stock sliding caliper can under hard braking, so pedal pressure translates more directly into clamping force instead of getting absorbed by caliper movement.
• A larger, two-piece rotor carries more thermal mass than a stock single-piece disc, which helps it shed heat faster and resist fade during repeated stops.
• The TT8703S kit is engineered to clear the Model 3's factory wheel with no spacers required, keeping the stock offset and wheel fitment intact.
• Stainless steel lines reduce the line expansion you get with rubber hoses under pressure, which is part of why the pedal feels firmer and more consistent from the first stop to the last.

Frequently Asked Questions