PRO CIRCUIT T-4 Exhaust CRF80F/CRF100F XR80/XR100R 2001-2013 4H01080 El Diablo 4" Mufflers This must be done in

This must be done in order for the steering damper to mount properly

This also allows for quick cover removal / access to the sprocket

Aid in rear wheel alignment

Proper alignment productions a faster better handling R3 when every second counts

Merged the 1-7/8" head pipes into a large 2-1/4" collector that steps up to a 2-1/2" perforated core Core wrapped in stainless steel screen then encloded in fiberglass pillow Collector covered by large one-piece heat shield that is held in place with two clamps and stamped Cobra logo 4" muffler body capped with a 4" machined aluminum dual-cut tip that features small alluvial flutes Body arrives pre-set in slight upward position Works wtih stock or extended bags

PRO CIRCUIT T-4 Exhaust CRF80F/CRF100F XR80/XR100R 2001-2013 4H01080 El Diablo 4" Mufflers This must be done inAdvanced design ensures lightning quick throttle response Extensively track and dyno tested Steel Allen head screws make repacking an easy task Exclusive E glass pillow packing Includes USFS approved spark arrestor that can be removed for closed course racing