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Description
The Mini Powercore 4 is a great performance bolt on for your mini. Offered as a standard Mini Powercore 4, Closed Course Big Bore System or as a Spark Arrestor Version, the Mini Powercore 4 features a Hi-Flo stainless steel core and formed end caps, an aircraft grade aluminum canister and a durable stainless steel header. Its pounds lighter than stock and you will swear the motor has been bored and stroked with the first twist of the throttle.
FEATURES
- Hi-Flo cap boosts all-around performance
- Computer designed and dyno-tested for every 4-stroke application
- Enhanced sonic evaluation delivers a higher flow of exhaust gases, which increases power
- A stainless steel mid-pipe mates to the computer-designed rear can for lightweight durability
- Round perforated steel inner cores make for optimum flow, using hi-flo technology
- FMF's exclusive cross-weave internal packing provides longevity and maximum sound dispersion
- Elliptical aluminum can offers strategic sizing for superior performance
- optional Quiet Core insert will provide a decrease in sound level if desired
- Available with a screen-type spark arrestor that does not interrupt exhaust flow or performance
NOTE: This item may be subject to additional shipping charges.
Technical Specifications
- MFG. Part Number 041502
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. |