Yamaha YZF450 Motocross Bikes For Sale On eBay
The Yamaha YZ450F is a high-performance 450cc motocross bike built for riders seeking a punchy, revving machine with race capability.
Typical specs (guide only – always check with the manufacturer or original spec sheet for exact model details):
Displacement: ~449 cm³
Frame: aluminium perimeter / bilateral beam style
Front suspension: inverted forks
Seat height: ~960 mm
Weight: ~115–118 kg (depending on year and parts)
These are rough ranges. Always check with the manufacturer or an official source for the specific model year you’re looking at.
Buying tips for a used YZ450F
Engine & hours
Be cautious with crankshaft/rod issues — several owners report failures or snapping in newer models (some as early as 15–50 hours) attributed to possible heat treatment or manufacturing flaws.
Also, for 2023–2025 machines there are complaints about clutch baskets burning out early — some suggest fitting aftermarket baskets or using upgraded plates.
Check whether any ECU remaps were done; aggressive mapping plus poor fuel quality can push stress on pistons, rods and bearings.
Chassis & suspension
Some earlier models use air forks which are more sensitive to maintenance and prone to seal leaks under stress or wear. Later versions use more robust coil or cartridge setups.
Check for cracks or repair work around the head tube, linkage pivot points, swingarm mount, and frame welds — especially if used in heavy riding or competitive situations.
Also verify the integrity of rear shock mounts and shock linkage bearings for play or wear.
Alternatives to consider
If YZ450F listings are limited, overpriced, or problematic, you could also look at:
YAMAHA YZ450F 2022 - ONLY 17 HOURS FROM NEW - CRESCENT SUPPLIED
2021 YAMAHA YZ450F
Yamaha YZ450F 2022 LOW HRS
2019 YAMAHA YZF450- DEPOSIT TAKEN
2017 YAMAHA YZF450
2026 YAMAHA YZ 450F 70TH ANNIVERSARY - PRE ORDERS TAKEN - OFFICIAL DEALER ESSEX
2026 YAMAHA YZ 450F YZ-F 4 STROKE - PRE ORDER TAKEN - OFFICIAL DEALER ESSEX UK
2025 YAMAHA YZ 250F 450F YZ-F 4 STROKE YZ250F YZ450F - £1,450 OFF - IN STOCK!
Yamaha YZF450 2025 0 HOURS
Yamaha YZF 450 2023 in stock
2025 Yamaha YZF 450 19 minutes from NEW!!
2023 USED YAMAHA YZF 450 (NEW SHAPE) MOTOCROSS BIKE YZF CRF KXF RMZ FC SXF
Yamaha YZF 450 2016 ( MX / MOTOCROSS / ENDURO ) @ AJ TRADING
Unused 2024 Yamaha YZ450F 50th Anniversary MX Motocross. £9,395 (VAT INCLUSIVE)
Yamaha YZ450F 2021 Road Legal Supermoto 28hour Use MINT NOT Wr450 CRF KX
Yamaha Yz 450 Supermoto Not Exc Cr Sx 250
2019 YAMAHA YZF450
2017 YAMAHA YZF450
2019 YAMAHA YZF450
2021 YAMAHA YZF450 ROAD LEGAL MOTOCROSS/DIRT BIKE/OFF ROAD/CROSSER
FAQs
Is the YZ450F road legal?
In stock form, no — it’s built for motocross use. Many people do road conversions with lights, indicators etc but always verify your local legal requirements.
What changes happened across model years?
In recent years (2023–2025), there have been reports of clutch basket issues and rod failures. Earlier models (2018–2022) introduced electric start and updates in power delivery and suspension tuning.
In 2020, Yamaha made notable chassis and engine tweaks, improving midrange feel and throttle response; some riders felt the bike was more connected and responsive in that model year.