GY6 50/QMB 139 Stage 1 Performance Kit

Give that 4stroke 50 a boost with the brand new Scooterworks Direct/NCY Performance Kit. An easy upgrade that includes a stainless NCY exhaust, a high RPM compression spring, and multiple sets of jets and rollers for tuning perfection. Save 10% by purchasing this kit as whole, as opposed to getting each item individually.