Power-Up Performance Kit - KTM 65 SX / TC 65 / MC 65 2016-2023

Power-Up Performance Kit - FMF VFORCE Twin Air Performance Kit KTM 65 SX / TC 65 / MC 65 2016-2023

If you’re looking to turn your mini-cycle into a holeshot-hungry beast, you’ve come to the right place. We’ve curated the ultimate 65cc Performance Package that blends the raw, works-style power of the FMF Factory Fatty with the surgical precision of the VFORCE 4X Reed Valve. By pairing the dual-gauge steel of the Fatty pipe with the lightweight, extruded aluminum Powercore 2 silencer, we’ve managed to broaden the powerband and increase top-end over-rev without sacrificing that essential low-end grunt. It’s the kind of throttle-twisting fury that makes the stock setup feel like it’s running through a wet mattress; you get more snap, more torque, and a exhaust note that screams factory-backed dominance.

But power is nothing without proper respiration, which is why we’ve rounded out this kit with the V4X55 reed system and a Twin Air Factory Pre-Oiled filter. The VFORCE 4X doubles the reed tip surface area, effectively allowing the engine to inhale deeper and respond faster to every millimeter of throttle input. Meanwhile, the Twin Air dual-stage foam acts as the ultimate gatekeeper, increasing airflow while trapping the fine Florida silt that kills engines. When you Buy this KTM 65 SX performance kit, you aren't just bolting on parts; you're installing a cohesive system designed by the mad scientists of the industry to ensure your Husqvarna TC 65 or Gas Gas MC 65 launches out of corners like it’s strapped to a SpaceX booster.

Top Features Performance Package

What's in the Kit: 

• FMF Factory Fatty: Multi-gauge steel construction for pro-level "works" performance and durability. Part number - 025198
• FMF Powercore 2: Lightweight extruded aluminum canister with a performance flow end cap. Part number - 025199
• VFORCE 4X Reed Valve: Doubled reed tip surface for insane throttle response and increased torque. Part Number - V4X55
• Twin Air Dual-Stage Filter: Maximum airflow with industry-leading engine protection. Part Number - 154514X

Complete System: Tuned to provide gains across the entire RPM range for 65cc racers.

Fitment List

• 2016-2023 KTM 65 SX
• 2017-2023 Husqvarna TC 65
• 2021-2023 Gas Gas MC 65

FAQ

Q: Does this performance kit require jetting changes for my KTM 65?
With the increased airflow from the VFORCE 4X and FMF system, we highly recommend checking your plug color and potentially stepping up the main jet to optimize the fuel-to-air ratio.

Q: Is the Twin Air filter ready to use out of the box?
Yes! This kit includes the Factory Pre-Oiled version (154514X), so you can install it and hit the track immediately.

🚀 Don't let your rider get left in the roost. Upgrade to the ultimate 65cc power package today and start collecting trophies.

Note for Optimum Results: To gain the proper and reliable performance this kit is capable of, your top end should be fresh—especially since these small-bore engines utilize single-ring pistons. Please be aware that carburetor settings will need adjusting depending on your altitude, temperature, and the type of fuel used. To keep the bike in the powerband, we recommend going up one tooth on the rear sprocket (Standard is 48T, we recommend the Renthal Ultralight 49T - Part #192U-420-49GPSI).

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