
The facts.
| Brand | Accossato |
|---|---|
| Type | Off-road chain guide |
| Part number | GCY1 |
| Colours | Black, blue |
| Use | Off-road (enduro, motocross) |
| Fitment | Yamaha WR450F (2007–2020) |
| Check | Compare with the application list before ordering |
| Road approval | None documented, off-road and competition use |
DescriptionThe whole story▼
Yamaha's own blue and black run through the WR450F's plastics, and Accossato keeps its GCY1 chain guide to the same pair of colours rather than offering a wider spread that would clash with the bike's factory look. The GCY1 covers the WR450F built from 2007 to 2020, a chain guide fitted ahead of the rear sprocket to keep the chain tracking true on enduro ground.
Key Features
- Chain guide for the Yamaha WR450F, 2007 to 2020
- Accossato code GCY1, mounts ahead of the rear sprocket
- Keeps the chain tracking on line rather than drifting off the sprocket
- Blue or black
- Same part also listed for the Yamaha YZ125, YZ250, YZ250F and YZ450F
- Accossato's RTY4 covers this bike's rear axle blocks without an adjusting screw
- No German ABE on file; built for off-road and competition riding
Construction and Material Quality
Accossato shapes the GCY1 to the WR450F's own swingarm, positioning it ahead of the sprocket where this bike's design calls for it. Blue and black are the two finishes on offer, both drawn straight from Yamaha's own colour scheme rather than from a broader palette. A guide that has taken a hard knock and sits away from the sprocket should be checked and swapped if it no longer fits flush.
Matching Yamaha's Factory Blue
Riders who care about keeping a WR450F looking as close to showroom condition as possible, even after years of trail use, tend to notice when a replacement part comes in a colour that does not quite match the original plastics, and Accossato avoids that mismatch here by keeping the GCY1 to blue or black only rather than offering a wider range that might tempt an owner into a shade that clashes. For a bike built around this particular colour scheme, that restraint is a small point in the guide's favour rather than a limitation.
Fitment and Compatibility
Accossato's own list runs the WR450F on the GCY1 from 2007 to 2020, and the identical guide also covers the YZ125, YZ250, YZ250F and YZ450F, since all share the relevant swingarm shape across the Yamaha off-road and motocross range. A bike from either end of that long run is worth checking against the list before ordering. This WR450F also takes Accossato's RTY4 rear axle blocks, which skip the adjusting screw.
Road Approval
No German ABE is on file for the GCY1, so Accossato lists it for off-road and competition use rather than for a bike ridden on public roads.
Scope of Delivery
This listing covers one chain guide, in the colour chosen at checkout.
Specifications
- Type: Off-road chain guide
- Part number: GCY1
- Colours: Black, blue
- Use: Off-road (enduro, motocross)
- Fitment: Yamaha WR450F (2007–2020)
- Check: Compare with the application list before ordering
- Road approval: None documented, off-road and competition use
What's includedEverything in the box▼
- 1x Accossato chain guide
FitmentWhich bikes this fits▼
- Yamaha WR450F (2007–2020)
- Yamaha YZ125 (2008–2020)
- Yamaha YZ250 (2008–2020)
- Yamaha YZ250F (2009–2020)
- Yamaha YZ450F (2009–2020)
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