Power-Up Performance Kit Stg.1 - Moto-House MX - 2019-2026 Yamaha YZ85

Upgrade Your Performance with Moto-House MX Stage 1 Power-Up Kit

The Moto-House MX Stage 1 Power-Up Performance Kit is engineered to solve the limitations of stock intake and exhaust flow on the Yamaha YZ85. Specifically optimized for the updated YPVS system, this kit eliminates "flat spots" in the powerband and delivers a significant Heavy Duty boost in throttle response. At Moto-House MX, we’ve bundled the industry’s most trusted brands—FMF, VForce, Twin Air, and Moose—to provide a comprehensive solution that increases low-to-mid range power without sacrificing the legendary reliability of your Yamaha engine.

Each component in this kit is selected for its precision engineering and Racing Performance capabilities. From the snap-together VForce4 reed system that optimizes intake velocity to the FMF Shorty Silencer crafted from aircraft-grade 6060 T6 alloy, every part works in synergy. The inclusion of a high-compression top-end gasket kit raises cylinder pressure for more "snap," while the Twin Air dual-layer foam ensures your engine breathes the cleanest air possible. This is a bolt-on weight savings and power efficiency upgrade that delivers measurable gains in both horsepower and torque.

Top Features: Moto-House MX Stage 1 Power-Up Kit

• FMF PowerCore 2 Shorty: Shorter canister length for a massive increase in low-end hit and aircraft-grade durability.
• VForce4 Reed System: Patented snap-together design with rubber over-molding for an instant increase in torque across the entire powerband.
• High-Compression Gaskets: .012" thick Moose Racing base gaskets designed to raise compression for a harder-hitting engine feel.
• Twin Air Pre-Oiled Filter: Dual-layer foam technology that increases airflow while providing the world’s best engine protection.

Expert Pro-Tip: When installing the VForce4 reeds and FMF Shorty, we recommend checking your spark plug color after the first ride to ensure your jetting is perfectly matched to the increased airflow of the Stage 1 kit.

Fitment List

Year Range	Vehicle Brand	Vehicle Model & Size
2019-2026	Yamaha	YZ85 / YZ85 LW (Large Wheel)

Frequently Asked Questions

Q: Will this Stage 1 kit fit my Yamaha YZ85?
A: Yes, this kit is specifically designed for Yamaha YZ85 models from 2019 through 2026 with the YPVS system.

Q: Is installation difficult?
A: No. All components are direct bolt-on replacements and can be installed with basic hand tools in your garage.

Q: What performance gains can I expect?
A: Riders typically see a much more aggressive throttle response, stronger low-to-mid power pull, and smoother acceleration through the gears.

Recommended Pairings: We suggest pairing this kit with a Twin Air PowerFlow Kit and Engine Ice Coolant to keep your high-compression motor running cool.

Stop by our local Store Montverde, FL or lightning-fast shipping across the USA.

Moto-House MX – Choice of Champions – is located in Clermont/Montverde, FL. The Best Motocross/UTV & ATV Shop in Central Florida.