Springs hold much better tension on the belt than factory

and fine particulate matter as small as one micron

Performance & Cooling Benefits:

Lean into the throttle on an dirt road and the power and sound experience is liberating

ECU Hard Flash - Ski-Doo 850Turbo (Gen5) helix Springs hold much better tensionHow the Mail In Reflash Works Purchase this License: This covers the tuning license for your specific vehicle. Complete the Work Order: Download and fill out the form below. Ship us your ECU: Include the form in the box with your ECU (Customer covers inbound shipping). We Flash & Return: We program your ECU and ship it back to you. PROMO: We cover return ground shipping for all reflash orders Required: Download Work Order Form You MUST include a