ST4129 SHIFT-TECH BMW R 1300GS CAT-LESS TITANIUM HEADER KIT + VALVE

ST4129 SHIFT-TECH BMW R 1300 GS Cat-Less Titanium Header Kit with OEM Valve 2023'+ Models 

Unlike conventional cat-delete systems, the ST4129 Shift-Tech Titanium Header Kit is engineered to retain the OEM ECU-controlled exhaust valve, ensuring controlled sound levels during cruising and steady-throttle operation. This design preserves optimal exhaust backpressure for strong low-RPM torque while avoiding ECU fault lights or error codes commonly associated with exhaust valve removal.

Manufactured entirely from high-grade titanium, this header system is significantly lighter than the OEM unit, offers superior heat management, and delivers long-term durability without corrosion or discoloration.

Key Features

OEM Valve Integration

• Retains the factory ECU-controlled exhaust valve

• Maintains smooth operation and factory-like behavior

• No servo delete required

• Prevents exhaust-valve-related fault codes

Performance & Rideability

• Preserves exhaust backpressure for improved low-end torque

• Controlled sound output at cruising RPMs

• Ideal balance between performance, noise management, and usability

Weight & Heat Reduction

• Fully titanium construction — substantially lighter than OEM

• Eliminates the catalytic converter, reducing radiant heat

• Titanium cools significantly faster than stainless steel

• Reduced heat buildup when riding slowly or parking on long grass

• Corrosion-free and resistant to staining

Important Compliance Notice

• Does not meet emission regulations

• Intended for off-road or race use only

• On Euro 5+ models equipped with dual lambda sensors, removal of the catalytic converter may cause the ECU to register a diagnostic trouble code (DTC) and illuminate the malfunction indicator light (MIL) due to deviation from factory catalytic converter parameters