Honda Fit/Jazz (GK5) Big Brake Kit Upgrade / TTSPORT Direct-Mount Series
The third-generation Honda Fit doesn't look like much to non-enthusiasts, but under the GK5 badge it's a fixture at tracks like Zhuhai, Zhaoqing, and Tianma. The naturally aspirated 1.5L Earth Dreams engine puts out 131 hp, more than enough to move a car weighing just over a ton, and the short wheelbase makes it a genuinely fun chassis. The brakes, though, never got the memo — this GK5 still ran a rear drum setup that couldn't keep up with the rest of the car.
Stock, this GK5's 100-0 km/h stopping distance measured 41 meters — not great for a car built to be driven hard. The owner brought it in for a rear drum-to-disc conversion using TTSPORT's Fit-specific kit, paired with a 260x9mm high-carbon heat-treated rotor and stainless brake lines, all built to clear the car's 15-inch wheels with no spacers.
The Problem: Rear Drum Brakes on a Track-Bred Fit
It's a little ironic: a car with a genuine enthusiast following, still running a drum brake out back. Drums are cheap and simple, but they trap heat and water inside an enclosed housing instead of shedding it. Repeated hard stops on track or aggressive street driving push drum temperatures up fast, and that leads to noticeable brake fade — exactly what you don't want in a car people actually push hard.
Converting the rear axle to disc brakes was the practical fix: an exposed rotor and pad setup dissipates heat and clears water far more effectively than a drum ever can.
Vehicle & Kit Specs
| Item | Specification |
|---|---|
| Vehicle | Honda Fit (GK5), 15-inch wheels |
| Rear caliper | TTSPORT single-piston caliper, Fit-specific rear drum-to-disc conversion kit |
| Rear rotor | TTSPORT 260x9mm high-carbon heat-treated, one-piece curved-vane rotor |
| Pads | TTSPORT low-dust, low-noise brake pads |
| Lines | TTSPORT stainless steel brake lines |
Why It Works
- An open disc-and-pad setup sheds heat and water far more effectively than an enclosed drum, cutting the fade that comes with repeated hard braking.
- The 260x9mm one-piece rotor runs true and resists warping, so the pedal stays consistent instead of pulsing under load.
- TTSPORT's low-dust, low-noise pads give a linear, predictable pedal feel that's friendly for street driving while still holding up on track.
- Stainless lines are shaped to the car's routing rather than forced into a bend, avoiding the metal fatigue and leaks that can come from a line under constant strain, with an outer abrasion layer for added durability.
- Built specifically for the GK5's rear hub and knuckle, the kit clears the factory 15-inch wheels with no spacers needed.
Installation Gallery
Does this TTSPORT kit fit under the stock 15-inch wheels on a GK5 Fit?
What's included in the TTSPORT rear drum-to-disc conversion kit?
Need fitment confirmation? Choose the closest TTSPORT series or send your vehicle, wheel size, and intended use before ordering.