Frenkit Performance Brake Caliper Piston & Seal Rebuild Kit
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Frenkit Performance Brake Caliper Piston & Seal Rebuild Kit - Toyota GR Supra (A90) / BMW Z4 (G29) - Front Brembo 40/44mm
This Frenkit Performance kit rebuilds one front Brembo 4-piston caliper on the Toyota GR Supra (A90, GT and GTS) and the BMW Z4 (G29). It replaces all four pistons (two 40mm and two 44mm) and includes high-temperature silicone dust boots, pressure seals, bleed screws and a caliper temperature sticker.
Frenkit Performance parts use a peroxide-vulcanised silicone rubber developed for high brake temperatures. It works from -60°C to +200°C continuously and copes with short spikes to 300°C, and Frenkit says it keeps its properties about 30% better than rival materials after 70 hours at 200°C.
Note: For the Brembo 4-pot front caliper with 40mm and 44mm pistons. One kit services one caliper; order two kits for a pair. Installation by a professional is recommended.
Features
- Two 40mm and two 44mm pistons made to OE specification
- High-temperature grey silicone dust boots
- Performance pressure seals
- Bleed screws and silicone bleeder caps
- Caliper temperature sticker shows peak caliper temperature
Pairs Well With
Not sure which kit suits your calipers? Contact our team at sales@chicaneaustralia.com.au.
Vehicle Compatibility
| Make | Model | Chassis | Engine |
|---|---|---|---|
| BMW | Z4 M40i | G29 | B58 |
| Toyota | GR Supra | DB42 | B48 |
| Toyota | GR Supra | DB82 | B58 |
Product
- Brand
- Frenkit
- Part number(s)
- 674004
Details
- Product
- Performance caliper piston and seal rebuild kit
- Axle
- Front
- Caliper
- Brembo 4-piston
- Piston diameter(s)
- 40mm and 44mm
- Contents summary
- 4 pistons, seals, silicone boots, bleed screws, temperature sticker
- Material
- High-temp peroxide-vulcanised silicone dust boots (-60 to +200°C, spikes to 300°C)
- Quantity
- One caliper
Contents
- 2 x 40mm pistons
- 2 x 44mm pistons
- 2 x 40mm pressure seals
- 2 x 44mm pressure seals
- 2 x 40mm high-temperature silicone dust boots
- 2 x 44mm high-temperature silicone dust boots
- 2 x bleed screws
- 2 x silicone bleeder caps
- 1 x caliper temperature sticker
No instructions available for this product.

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