⟲ 360° — drag meThe facts.
| Brand | Accossato |
|---|---|
| Type | Off-road rear axle blocks without adjusting screw |
| Part number | RTH3 |
| Colours | Black, silver, red |
| Use | Off-road (enduro, motocross) |
| Fitment | Honda CRF250R (2009–2017) |
| Check | Compare with the application list before ordering |
| Road approval | None documented, off-road and competition use |
DescriptionThe whole story▼
Some riders set up a chain exactly as Honda intended and see no reason to change the method, which is why Accossato keeps a version of its axle blocks for the CRF250R without an adjusting screw built in. The RTH3 covers the bike from 2009 to 2017, a pair of rear axle blocks that hold the wheel's position at the swingarm ends while leaving chain tension to be set the stock way.
Key Features
- Rear axle blocks for the Honda CRF250R, 2009 to 2017
- Accossato code RTH3, one pair, left and right
- No built-in adjusting screw; chain tension set the stock way
- Black, red or silver
- Same pair also fits the Honda CRF450R and CRF450RX
- Accossato also lists a chain guide, GCH1, and blocks with an adjusting screw, RCH2, for this bike
- No German ABE on file; built for off-road and competition use
Construction and Material Quality
Each RTH3 block takes the place of the stock part at the swingarm, matching the adjustment method the bike was designed around rather than adding a feature the original design never had. The pair comes in black, red or silver, a small choice that most owners make to match the bike rather than for any practical reason. A block with a rounded edge or a visible chip after a hard landing is worth swapping as a pair, since mismatched wear on one side can leave the wheel sitting slightly off centre even when the chain tension itself looks fine.
A Routine Before Practice Days
Riders who spend most weekends at the local track rather than racing build up a short list of checks before every practice session, and the rear axle blocks are easy to leave off that list simply because nothing about them changes week to week. A loose or worn block, though, is exactly the kind of fault that shows up gradually rather than all at once, as a chain that seems to need tightening more often than it should or a rear wheel that no longer sits quite square once the axle nut is torqued down. Working a quick look at both blocks into the same pre-ride check as tyre pressure and chain tension catches that kind of wear early, before it turns into a chain that comes off its sprocket mid-session. Riders who have stuck with the stock adjustment method for years have no reason to change habits just because the original blocks are due for replacement.
Fitment and Compatibility
On its own application list, Accossato names the CRF250R built between 2009 and 2017 for the RTH3, and the identical pair also fits the CRF450R and the CRF450RX, sharing the same axle block position. Owners running more than one of these models can fit the same pair across the garage rather than keeping track of near-identical parts. For this bike, Accossato also lists a matching chain guide, GCH1, and a version of the blocks with an adjusting screw built in, RCH2, for riders who want that method instead; checking the exact build year against the application list is worth doing whichever version is chosen.
Road Approval
No German ABE is on file for the RTH3, so Accossato lists the blocks for off-road and competition use rather than for use on public roads.
Scope of Delivery
This listing covers one pair of rear axle blocks, left and right, in the colour you select.
Specifications
- Type: Off-road rear axle blocks without adjusting screw
- Part number: RTH3
- Colours: Black, silver, red
- Use: Off-road (enduro, motocross)
- Fitment: Honda CRF250R (2009–2017)
- Check: Compare with the application list before ordering
- Road approval: None documented, off-road and competition use
What's includedEverything in the box▼
- Accossato rear axle blocks
FitmentWhich bikes this fits▼
- Honda CRF250R (2009–2017)
- Honda CRF450R (2009–2017)
- Honda CRF450RX (2017)
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