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Description
Take your performance to new heights with a Jet Kit for your vehicles. Increase power and improve performance throughout the entire RPM range, while improving throttle response and smoothness. These Jet Kits take the guesswork out of tuning your vehicles.
Whether you’re rolling with a stock vehicles or you’ve made some modifications, our Jet Kit will optimize your air/fuel ratio to eliminate rough spots and help you take control of your vehicles’s power. You can go with a Stage 1 Jet Kit to give your stock engine a 5% boost of horsepower or send it all the way up to Stage 3 if you’ve already made major modifications to your vehicles.
STAGE 1 DETAILS
Perfect for vehicles with a stock engine using the stock airbox, air filter, and pipes. Stage 1 Jet Kits are engineered to improve throttle response and deliver approximately 5% more horsepower than stock. These kits are fully adjustable to allow the use of well-designed aftermarket pipes and stock replacement air filters, like K&N.
STAGE 2 DETAILS
If you’ve made slight modifications to your vehicles, but still crave more performance, a Stage 2 Jet Kit is the solution. With a Stage 2 Jet Kit, you could see power gains of approximately 8%. This kit is intended for vehicles with stock or mildly tuned engines using a well - designed aftermarket pipe with a modified airbox and a stock replacement air filter.
FEATURES
- 5-8% power range.
- Fully adjustable.
- Increases power and drivability.
- For carbureted vehicles only.
Technical Specifications
- MFG. Part Number 3243
Vehicle Information
Yamaha TT-R125 Dirt Bike (2000-2026)
The Yamaha TT-R125, an enduring off-road motorcycle, has been a consistent presence in the market from its introduction in 2000 through the 2026 model year. Renowned for its reliability and beginner-friendly design, all models in this range are powered by a robust 124cc, air-cooled, SOHC, four-stroke, single-cylinder engine with two valves, paired with a 5-speed transmission. Fuel delivery is consistently handled by a Mikuni VM20 carburetor, ensuring a stable and accessible performance across all years. Throughout its production from 2000 to 2026, the TT-R125 has maintained a remarkably consistent core engine and chassis platform. There have been no significant mid-cycle generation changes that altered its fundamental architecture or performance. Instead, Yamaha introduced various trims to cater to different rider needs. The initial 2000 models included the standard TT-R125 and the TT-R125L (Large Wheel) with bigger wheels and a front disc brake. In 2003, the TT-R125E added an electric starter. The TT-R125LE, combining larger wheels, a front disc brake, and electric start, became a prominent offering, continuing through 2026. These were feature additions, not fundamental redesigns. FAQ:
Q: How can I ensure I select the correct parts for my Yamaha TT-R125?
A: To guarantee a perfect fit, please use the year and edition selector available on this page to specify your exact model.
Maintenance
| Component | Interval | Details |
| Engine Oil | Initial: 30 hours or 1 month. Subsequently: 90 hours or 6 months. | Check level before every ride. Replace drain plug gasket/washer with each oil change. |
| Oil Filter | Every 6,000 km or with every oil change. | Recommended for optimal engine health. |
| Spark Plug | Every few years or if issues arise. | Inspect periodically. Recommended gap: 0.5 mm - 0.75 mm. |
| Air Filter | Recreational riding: clean every 15 hours. Aggressive/Race riding: clean every 5 hours. | Easy-access, tool-free. |