FMF Powercore 4 Muffler 042123 1821-0672 M1 KX/KXF Bolt Kit GB Racing products are further

GB Racing products are further differentiated from knockoffs by way of unique branded packaging

You can purchase the slip-on silencer separately at any time to complete your LINK ™ performance package

Asymmetrical medial and lateral double pivot system for improved levels of flexibility and precision for both independent and synchronized movement

Abrasion resistant fabric front panel

wide area protects the pilot's hands more

FMF Powercore 4 Muffler 042123 1821-0672 M1 KX/KXF Bolt Kit GB Racing products are furtherDeveloped to increase the horsepower and torque throughout the entire power curve producing a noticeable power increase that is usable and compatible with every style of riding Aluminum construction and stainless steel Hi Flo end caps make for the perfect balance of performance and strength Removable spark arrestor included