Here’s a summary of the 2026 Yamaha YZ450F — what’s new, the specs, and what makes it stand out. If you like, I can pull up pros & cons or how it compares to a similar bike.
Frame Update: Redesigned frame (inner & outer structure) with a thinner front downtube. The idea is to better balance rigidity and flex, to improve front‑end feel and stability. Motorcycle+2MCNews+2
Suspension Tweaks: Revised fork settings, and a new KYB rear shock that includes a hand‑operated low‑speed compression clicker. Meant to give more control over damping, especially in jumps or rough terrain. Yamaha Motorsports+2Motorcycle+2
Engine / Intake Changes: A redesigned intake port to produce stronger tumble (better mixing of air/fuel) aiming for more efficient combustion. Also updated intake & exhaust / air‑intake ducting‑resonators to meet noise regs and smooth out throttle response. Motorcycle+2Yamaha Motorsports+2
Hydraulic Clutch: New standard hydraulic clutch for smoother lever feel & more consistent engagement. Also a new clutch hub design for better lubrication / durability. Motorcycle+1
ECU Lock / Security Feature: First in this class — you can lock engine start via password using Yamaha’s Power Tuner App. Helps with theft prevention. Motorcycle+1
Styling / Ergonomics Updates: Slimmer front number plate; new two-piece side covers; sharper rear fender; new “honeycomb” seat cover material that holds better under acceleration (so you slide forward easier but less so backward). Motorcycle+1
| Component | Spec |
|---|---|
| Engine Type | 450 cc liquid‑cooled DOHC 4‑stroke, 4 titanium valves. Yamaha Motorsports+1 |
| Bore × Stroke | 97.0 mm × 60.8 mm Yamaha Motorsports+1 |
| Compression Ratio | ~ 13.0:1 Yamaha Motorsports+1 |
| Fuel Delivery | Mikuni 44 mm fuel injection. Yamaha Motorsports+1 |
| Transmission | 5‑speed constant mesh; multip‑late wet clutch (now hydraulic) Yamaha Motorsports+1 |
| Front Suspension | KYB spring‑type fork, speed sensitive damping; fully adjustable; ~12.2 in travel. Yamaha Motorsports+1 |
| Rear Suspension | KYB single shock; fully adjustable; ~11.6 in travel. Yamaha Motorsports+1 |
| Brakes | Front: 270 mm disc; Rear: 240 mm disc. Yamaha Motorsports+1 |
| Tires | Dunlop Geomax MX33 – front (80/100‑21), rear (120/80‑19) Yamaha Motorsports+1 |
| Seat Height | ~ 38.0 in Yamaha Motorsports+1 |
| Ground Clearance | ~ 13.6 in Yamaha Motorsports+1 |
| Wet Weight | ~ 243 lb (with all fluids, full tank) Yamaha Motorsports+1 |
| Fuel Capacity | ~ 1.6 gallons |
The class benchmark. Yamaha took the championship winning YZ450F and made it even better with highly refined power and handling characteristics for a level of feel and control that unlocks a racer’s full potential.
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Here’s a summary of the 2026 Yamaha YZ450F — what’s new, the specs, and what makes it stand out. If you like, I can pull up pros & cons or how it compares to a similar bike.
What’s New for 2026
Frame Update: Redesigned frame (inner & outer structure) with a thinner front downtube. The idea is to better balance rigidity and flex, to improve front‑end feel and stability. Motorcycle+2MCNews+2
Suspension Tweaks: Revised fork settings, and a new KYB rear shock that includes a hand‑operated low‑speed compression clicker. Meant to give more control over damping, especially in jumps or rough terrain. Yamaha Motorsports+2Motorcycle+2
Engine / Intake Changes: A redesigned intake port to produce stronger tumble (better mixing of air/fuel) aiming for more efficient combustion. Also updated intake & exhaust / air‑intake ducting‑resonators to meet noise regs and smooth out throttle response. Motorcycle+2Yamaha Motorsports+2
Hydraulic Clutch: New standard hydraulic clutch for smoother lever feel & more consistent engagement. Also a new clutch hub design for better lubrication / durability. Motorcycle+1
ECU Lock / Security Feature: First in this class — you can lock engine start via password using Yamaha’s Power Tuner App. Helps with theft prevention. Motorcycle+1
Styling / Ergonomics Updates: Slimmer front number plate; new two-piece side covers; sharper rear fender; new “honeycomb” seat cover material that holds better under acceleration (so you slide forward easier but less so backward). Motorcycle+1
Key Specs