Pro Circuit T-4 Full System Feature lightweight 6061 T-6 brushed aluminum canister with stainless steel end cap Advanced design ensures lightning-quick throttle response CNC-machined modular end-cap design provides tunable power Extensively track- and dyno-tested Silencers include USFS-approved spark arrestor that can be removed for closed-course racing Steel Allen head screws make repacking an easy task Exclusive E-glass pillow packing Stainless steel headers USFS approved spark arrestor Aluminum Stainless Steel 4S03125
The exhaust fit perfectly on my 2003 Suzuki drz125.It looks great and sounds great and fits great!Definitely buying more pro circuit exhausts in the future.
Added this exhaust to my KLX125 and could instantly feel the power band increase. Sounds great too. Can't beat this price. A full exhaust for around $200!!!
The exhaust is very easy to install and sounds good. I cannot tell you if there is much difference ir not because when I got the bike it did not have an exhaust.