The 2025 Kayo TT125 EFI represents the pinnacle of pit bike engineering, combining race-proven performance with modern fuel injection technology for unparalleled throttle response and reliability. Designed for both competitive riders and recreational enthusiasts, this 125cc machine delivers big-bike performance in a compact, lightweight package.
✔ 123.67cc EFI Engine – Precise fuel delivery in all conditions
✔ Hydraulic Disc Brakes – Superior stopping power
✔ Adjustable Suspension – 10.3" rear wheel travel
✔ Lightweight Triple-Beam Frame – 178.6 lb curb weight
✔ Competition-Ready Components – Race-inspired ergonomics
123.67cc SOHC 4-Stroke:
54mm Bore x 54mm Stroke – Perfectly square engine design
9.0:1 Compression Ratio – Optimized for pump gas
Electronic Fuel Injection (EFI):
Instant cold starts
No carburetor adjustments needed
Consistent performance at all altitudes
15-20% better fuel efficiency vs carbureted models
CDI Ignition – Maintenance-free electronic spark
4-Speed Manual Transmission:
Positive N-1-2-3-4 shift pattern
Durable clutch assembly
428 heavy-duty chain final drive
Front Suspension:
6.7" travel hydraulic forks
35mm stanchion tubes
Adjustable preload
Oil-damped operation
Rear Suspension:
10.3" wheel travel
Mono-shock design
5-position preload adjustment
Progressive rate spring
Triple-Beam Steel Frame:
TIG-welded construction
25° rake / 2.5" trail
48" wheelbase
178.6 lb dry weight
Ergonomics:
33.6" seat height
11.4" ground clearance
70" overall length
Narrow 29.5" width
Front Brake:
220mm hydraulic disc
Dual-piston caliper
Steel-braided line (optional)
Rear Brake:
190mm hydraulic disc
Single-piston caliper
Integrated parking brake
Front Wheel:
17" diameter
70/100-17 knobby tire
36-spoke aluminum rim
Rear Wheel:
14" diameter
90/100-14 knobby tire
36-spoke aluminum rim
1.72 Gallon Fuel Tank – Extended runtime
EFI-Specific Airbox – Water-resistant design
Racing Footpegs – Serrated traction surface
High-Flow Exhaust – USFS-approved spark arrestor
Digital Gauge Cluster – Speed, odometer, trip
| Category | Specification |
|---|---|
| Engine | 123.67cc SOHC 4-stroke EFI |
| Bore x Stroke | 54.0 x 54.0mm |
| Compression | 9.0:1 |
| Fuel System | Electronic Fuel Injection |
| Transmission | 4-speed manual |
| Final Drive | 428 chain |
| Suspension F/R | 6.7" / 10.3" travel |
| Brakes F/R | Hydraulic disc |
| Tires F/R | 70/100-17 / 90/100-14 |
| Wheelbase | 48.0" |
| Seat Height | 33.6" |
| Fuel Capacity | 1.72 gal |
| Curb Weight | 178.6 lbs |
✔ No Carburetor Hassles – EFI works flawlessly in all conditions
✔ Pro-Level Suspension – 10+" rear wheel travel
✔ Race-Ready Ergonomics – Perfect rider triangle
✔ Unmatched Reliability – Built for hard use
✔ Track-to-Trail Versatility – Works everywhere
Kayo
Kayo
