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2021-2023 Yamaha Mountain Max 800 Performance Products & Parts | Speedwerx Inc.


For tech info, dyno tests, and videos, check out the product pages below or click here  Technical Information & Videos


The wait is over! Yamaha returns to the two-stroke mountain market in a big way with the Mountain Max 800, which is virtually identical to it's Arctic Cat M 8000 Alpha One cousin so the products we make and sell for the Cats are a direct fit for the Yamaha as well. The C-TEC2 794cc engine with Semi-Direct Injection (SDI) delivers increased performance and rideability in the 160-hp class. It provides crisp throttle response, outstanding mid-range and class-leading performance in addition to improved fuel mileage and reduced oil consumption.

You know we can't leave well enough alone though- we've developed many performance parts and accessories for the new models with the same quality, durability, and of course the Straight-Up USA Horsepower that has made us known as the Worldwide Leader in Arctic Cat Performance! We had many machines equipped with our Stage 2 Exterminator Kits out on the snow in the 2017-2018 season, and riders were raving about how they took the smooth running, yet hard pulling 8000 C-TEC2 to another level, with a fun factor above and beyond any other stock displacement, naturally aspirated machine whether it be a ZR trail blaster or a M-Series mountain masher. Those riding M 8000's equipped with our Supercharger Kit reported rock solid pull and go reliability, with power, consistency, and instant throttle response that simply can't be matched by other boosted machines. For 2019, Arctic Cat has made only minor tweaks to the drivetrain on the 8000 series machines, so you can expect the same great performance with our kits and components. The big news is in the suspension department with the ZR iACT models with electronically adjustable shocks, and the new Alpha One model that is truly a game changer in the steep and deep- just add a healthy dose of Straight-Up USA Horsepower to either of these platforms to make the best even better! The 2020-2021 models have changes to the top end and injection system, but the power output is virtually the same as 2018-2019 and our Exterminator Kits and Supercharger will give you the extra kick that will put a permanent grin on your face!


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