RAWRR MANTIS X 58 TOOTH REAR SPROCKET MAX TORQUE CONVERSION KIT ONLY AVAILABLE FROM BLR TUNING Unleash the full potential of your 2024–2025 RAWRR MANTIS X with the all-new BLR TUNING 58 Tooth Sprocket Conversion Kit — the most aggressive and complete torque upgrade ever made for the Mantis X platform. Nobody else has this kit. Nobody else is doing it. This is 100% exclusive to BLR TUNING. READ EVERYTHING BEFORE PLACING YOUR ORDER. WHAT’S INCLUDED IN THE KIT: Everything you need, right out of the box: 58-Tooth Rear Sprocket – Precision-machined from 7075-T6 billet aluminum for maximum strength and ultra-light performance. Upgraded Stainless Steel Chain Adjuster Bolts – Longer and stronger than stock, built to handle the added torque. BLR TUNING 420 Chain Kit – Includes two master links and one extra inner link for the break-in process. Tube of Blue Thread Locker – For securing your hardware the right way. One Black Zip Tie – For re-securing the brake cable to the swing arm after installation. INSTALLATION TORQUE SPECS: Rear sprocket bolts: 33 ft-lbs (use blue thread locker) Rear axle nut: 63.5 ft-lbs Use synthetic grease on the axle before sliding it through the hub. FITMENT: 2024 RAWRR MANTIS X 2025 RAWRR MANTIS X AFTER INSTALL MAKE SURE TO OIL YOUR CHAIN. WE USE PJ1 BLACK LABEL OR CHAIN WAX. DO NOT RIDE THE BIKE UNTIL YOU HAVE OILED THE CHAIN. INSTALLATION INSTRUCTIONS (IMPORTANT) 1. Brake Cable Preparation: Cut the factory zip tie and remove the T30 Torx bolt that secures the rear brake cable to the swing arm. Pull 8–10 mm of slack backward through the frame toward your rear brake assembly. There’s plenty of slack available in the line. Reinstall the T30 Torx bolt, then fasten the brake cable back to the swing arm using the included black zip tie. When finished, the setup should look completely factory stock. 2. Chain Installation and Break-In: Use the included 420 chain with both master links and the extra inner link during the initial setup. The chain will feel very loose at first, even with the wheel fully back on the adjusters. This is normal. Ride the bike gently for about 1 mile, easing into full throttle a few times to let the chain stretch and settle. Return to your workspace, loosen everything, and remove the extra inner link and one master link. Reinstall and properly adjust the chain. Ride another 5–10 miles, then recheck and fine-tune chain tension again. After this process, your setup will be properly seated and ready for maximum performance. PERFORMANCE GAINS: Upgrading from the stock 51-tooth rear sprocket to the 58-tooth delivers approximately a 13.7% torque increase at the rear wheel. That means more low-end punch, faster launches, and instant throttle response — while sacrificing only a small amount of top-end speed. During testing, the stock speedometer still read 49–50 mph, though the actual top speed is slightly lower due to gearing changes. THE RESULTS: This is the largest rear sprocket that can physically fit on a RAWRR MANTIS X. Perfect for: Stunt riders chasing effortless wheelies with just a quick blip of the throttle. Trail riders who want instant torque to climb, carve, and launch through tight sections. Anyone who wants maximum low-end power, faster acceleration, and pure adrenaline. HOW TO ORDER Choose your Chain color and Sprocket color, and we’ll make sure your entire kit is ready to install right out of the box. CUSTOM MADE TO ORDER - 2 WEEKS MINUMUM TO SHIP CAUTION: Before you place your order. Take a look at your stock factory chain on your MANTIS X. If it is the 420 chain then this will fit perfectly. If it is the 520H or 525 chain or any other size. Then this kit will not fit your bike whatsoever. The Sprocket would be the wrong size and the wrong bolt pattern. The chain would be the wrong size. None of it would work. When Rawrr first launched the Mantis X in 2025 it came equipped with a 420 chain and 420 front and rear sprocket. Then about halfway through the year they switched to a different chain and sprocket setup without saying anything about it. So you must inspect your bike before you place an order. This will only fit the 420 factory setup. This is a custom order. We do not accept returns, exchanges, or refunds for this product. If you crave maximum torque, endless wheelies, and tire-shredding fun, this is the conversion kit you’ve been waiting for. BLR TUNING — Performance Without Limits.
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