Parts & Accessories › TIED HELIX 71-55.36ER/71- 57.36ER Image 1 of 1 TIED HELIX 71-55.36ER/71- 57.36ER $108.95 Twin Traxâ„¢ helix produce a quick up-shift and improve back-shift for excellent throttle responseThe dual-angle option helix offers fine-tuning for changing conditions Quantity: Purchase Added! Twin Traxâ„¢ helix produce a quick up-shift and improve back-shift for excellent throttle responseThe dual-angle option helix offers fine-tuning for changing conditions