Pro Circuit’s T-4 exhaust offers improved power delivery and exhaust note. The T-4 is constructed with a lightweight brushed aluminum body with a stainless steel intake and end cap, which is tunable for different types of riding and terrain.

Pro Circuit’s Platinum pipes for 2-stroke ATVs are designed to produce more bottom and mid range power with explosive peak power. With their sparkling platinum finish, these pipes not only offer awesome performance gains, but they look great too.

ro Circuit is one of the most successful speed building companies in the world today. Owned and operated by Mitch Payton, Pro Circuit is a custom precision engine and suspension building facility. Pro Circuit’s owner has invested over 25 years in engine building and machine shop techniques. Having had the privilege to work with the most talented riders in the industry has allowed Payton to develop products and services that perform. Straight from the track to the shop and onto the customer’s bike or ATV, Pro Circuit performance products are some of the best available.
     Pro Circuit tests everything at the racetrack because the track is the only place to figure out what works and what doesn’t. The shop is a good place to make sure that a product is technically sound, but if you don’t use and test a product in the environment that it is meant for, all you have is numbers. So Pro Circuit goes racing so you benefit from a better product, a product you can count on when you want to win.
     Pro Circuit is based in Corona, California where their facility houses millions of dollars in performance measurement equipment allowing for precise tailoring of power output, and a virtual army of world-class technicians, mechanics and machinists. These resources along with the research and development skills of the world’s best riders allow Pro Circuit to create winning solutions custom tailored for nearly every machine and skill level of rider. From amateur to top pro, mini to vet, Pro Circuit can provide suspension and engine modifications, hard parts, and technical support with one objective in mind: winning.
     Known mainly for their motocross and Supercross dominance, Pro Circuit is also a player in the world of ATV performance. And just like they do with two-wheeled performance, Pro Circuit tests their ATV products on the racetrack to offer you winning products.
Pro Circuit’s Platinum pipes for 2-stroke ATVs are a good example of their commitment to the segment. Pro Circuit used their championship winning technology to build these ATV exhaust pipes & silencers. Designed to produce more bottom and mid range power with awesome peak power, Pro Circuit Platinum pipes have a lustrous platinum finish that will last for years while delivering great performance gains.
     Pro Circuit is an industry leader in 4-stroke exhaust technology and offers a wide variety of performance increasing systems for almost any 4-stroke ATV. The Pro Circuit T-4 exhaust features improved power delivery and exhaust note. The body is made from lightweight 6061 T-6 brushed aluminum and the end cap and intake are stainless steel. The T-4 has tunable end caps to allow fine tuning of power delivery for different types of riding and terrain and the silencers include a wire mesh spark arrestor that can be removed for closed course racing. The T-4 employs easy to service steel Allen-head screws which make re-packing the E-Glass pillow packing an easy task.
     For maximum weight savings, Pro Circuit offers the Titanium Ti-4. The advanced design of the Ti-4 was inspired by the successful T-4. This system ensures lightning-quick throttle response and faster, stronger response during hard acceleration. Like the T-4, the Ti-4 includes a wire-meshed USFS screen type spark arrester held in by steel Allen-head screws that can be removed for closed-course racing.
     Also for 4-strokes, Pro Circuit’s Type 496 is a revolutionary new system that uses a longer aluminum body and special E-Glass packing to lower noise output to a lower dB without sacrificing power. The Type 496 produces an impressive gain in horsepower when compared to the stock systems and features include stainless steel intake tube and FIM-approved end cap. The Type 496 is completely hand-assembled and welded for a fit and finish that would rival any Factory Works part with lightweight aluminum mounting brackets, a wire-meshed removable spark arrestor and modular end caps for tunable power.
     Pro Circuit is committed to providing the best exhaust systems and silencers for all ATVs large and small. Every detail down to the mounting hardware has been designed to ensure a proper fit and performance for all riders. Call your Parts Unlimited rep to find out more about Pro Circuit’s great products for ATVs.

The Titanium Ti-4 system from Pro Circuit is designed for quick throttle response and a faster, more powerful response during hard acceleration. The Titanium Ti-4 is a great choice for maximum weight savings.

Pro Circuit’s Type 496 for 4-strokes is a great answer for today’s growing noise level issues. The 496 was developed with a longer aluminum body and special E-glass packing that reduces the sound output while still increasing horsepower.