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Apr 23, 2026

Category: Engine

HMF Can-Am Renegade 1000R Titan QS Exhaust and Fuel Optimizer Test Review

Based on the number of comments on our 1000cc Can-Am ATV test videos, there are a number of you out there craving even more horsepower from your 1-liter Rotax engine. We won’t lie. We’re trying to be careful with the throttle on the 1000cc Can-Am’s at times. But we also understand that when you’re trying to win a drag race against some guy on a hopped-up sport quad or one

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HMF Can-Am Outlander 1000R Titan QS Exhaust and Fuel Optimizer Test Review

Based on the number of comments on our Can-Am Outlander test videos, there are a number of you out there craving even more horsepower from your 1-liter Rotax engine. We won’t lie. We’re trying to be careful with the throttle on the 1000cc Can-Am’s at times. But we also understand that when you’re trying to win a drag race against some guy on a hopped-up sport quad or one of

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HMF TRX250X / EX Performance Series Exhaust and Jet Kit Test

TRX250X and EX power upgrades from HMF   We reviewed Honda TRX250X a couple of years back and really appreciated the sporty little machine for its affordability, reliability, and fun it provides for riders of all skill levels. Out of the box, the Honda feels peppy. Its 229cc, air-cooled, four-stroke pulls well off the low-end and up into the midrange before singing off pretty quickly on top.      

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HMF Scrambler XP 1000 and 850 Titan Series Exhaust and Fuel Optimizer Test:

If you own a Polaris Scrambler XP 1000, chances are that you’re a believer that too much power is never enough. Maybe you’ve owned your Scrambler 850 for a while and are ready for a boost in performance. We recently had the chance to spend a day testing a Scrambler XP 1000 project built by Teixeira Tech. The XP was outfitted with an HMF Titan-Quiet exhaust, Fuel Optimizer, and Uni

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HMF Grizzly 700 Titan Series Exhaust and Fuel Optimizer Test: WITH VIDEO

More power without regret for your generation 1 Yamaha Grizzly 700.   For 2016, Yamaha introduced a brand new Grizzly 700, replacing the old 686cc engine with one that’s 22cc larger. It’s said to produce 6% more horsepower and 9% more torque than its predecessor, and you can feel it out on the trail.   If you have an older Grizzly 700 and are looking for an increase in horsepower,

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HMF, YFZ450R, Competition Series Exhaust and Fuel Optimizer Test: WITH VIDEO

As the most refined sport ATV on the market, Yamaha went to great lengths to make the YFZ450R a superb track performer and capable trail machine. Faced with meeting strict sound and emissions’ standards in order to be legal in public riding areas, the engine’s horsepower potential is robbed by a restrictive exhaust and a lean stock fuel map.   HMF Competition Series Exhaust   To maximize the potential of

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CT Racing Two-Stroke LT50 and KFX50 Engine Package Test

Suzuki’s two-stroke Quad Sport LT50 was around for quite a few years. Kawasaki even borrowed the model for a couple years, rebreeding it as the KFX 50. It was the nearly  perfect learning machine for the smallest of ATV enthusiasts. Unfortunately, its power output was so meager, that by the time  riders began mastering the very basics, they had outgrown the engine’s power.

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