OTK Rear Brake Disc Cooler

Sustained heat build-up in a kart brake system can contribute to brake fade and accelerated pad wear, particularly at circuits with extended braking zones or during longer race formats. The 0309.00 disc cooler ducts airflow directly onto the rear brake disc as the kart moves, which can help manage operating temperatures and support more consistent braking over a session. It is designed to integrate with the OTK rear brake assembly on both BSD and BWD equipped chassis.

Key Specifications

• Part Number: 0309.00
• Function: Brake disc cooling duct
• Brake System: BSD and BWD

Compatibility

Tony Kart

• Racer 401 RR
• Racer 401R
• Racer 401S
• Racer 401 T
• Racer 401 TDX

Kosmic

• Mercury RR
• Mercury R
• Mercury T
• Mercury TDX

Exprit

• Noesis RR
• Noesis T
• Noesis TDX

LN Kart

• LN Four
• LN Four T
• LN Four TDX

Redspeed

• RX RR
• RX T
• RX TDX

The cooler is supplied on its own — all mounting hardware and ducting is included in the 0309.00KIT fitting kit, which is required for installation and should be ordered at the same time.

Workshop Tip: When positioning the duct outlet, aim airflow across the vented section of the disc rather than directly at the caliper or pads. Directing cold air onto hot friction material can cause uneven thermal stress in the pad compound.