SKU: BRPHSA-O
MPN: HSA-O
The Harrington Transbrake Button – Adjustable (Model HSA-O) by Biondo Racing Products is a precision launch control component engineered for serious drag racing and bracket racing competitors who demand repeatable, consistent staging and transbrake engagement. This adjustable button replaces stock or worn transbrake switches, allowing drivers to dial in exact pedal feel and actuation point for optimal launch consistency. Whether you're running a dedicated quarter-mile bracket car or a street-strip hybrid, proper transbrake button setup is critical to shaving milliseconds off reaction time and maximizing traction off the line.
Biondo Racing's adjustable design allows tuners and drivers to customize actuation sensitivity and button travel, accommodating different driving styles and transmission brake pressure requirements. The compact form factor (measuring 4.8 x 1.35 x 7.6 inches) fits cleanly into most modern dash layouts and aftermarket pedal assemblies without requiring extensive fabrication. The lightweight construction (0.27 lbs) ensures minimal parasitic weight while maintaining durability through thousands of high-RPM launches. Adjustability is the key advantage here—rather than accepting fixed actuation points, racers can fine-tune the button's response to match their specific transbrake system calibration and personal pedal modulation preference.
This button suits bracket racers, heads-up drag competitors, and street-strip enthusiasts running manual or automatic transmissions equipped with transbrake or brake-stall launch control systems. Installation typically involves removing the factory switch and wiring the adjustable button into the existing transbrake circuit—a straightforward task for anyone comfortable with basic automotive electrical work. Verify your transmission's transbrake brake pressure specification and pedal assembly configuration before ordering to ensure proper fitment. Pairing this switch with a quality floor-mount pedal box and proper brake line setup will unlock consistent, repeatable launches that separate winners from the rest of the field.
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