Accossato off-road rear axle blocks RCH2 for Honda CRF450R, black colour⟲ 360° — drag me
02 · Data & docs

The facts.

Technical data
BrandAccossato
TypeOff-road rear axle blocks with adjusting screw
Part numberRCH2
ColoursBlack, silver, red
UseOff-road (enduro, motocross)
FitmentHonda CRF450R (2009–2017)
CheckCompare with the application list before ordering
Road approvalNone documented, off-road and competition use
DescriptionThe whole story▼

Between motos at a local race there is rarely more than a few minutes to glance over a CRF450R before the next gate drops, and chain tension is one of the first things worth a quick look after a moto spent landing hard off jumps and powering out of ruts. Accossato's RCH2 gives the CRF450R built from 2009 to 2017 a pair of rear axle blocks with an adjusting screw in each one, built for exactly that kind of fast trackside check.

Key Features

  • Rear axle blocks for the Honda CRF450R, 2009 to 2017
  • Accossato code RCH2, supplied as a pair, left and right
  • Each block carries its own adjusting screw for chain tension
  • Black, red or silver
  • Same pair also listed for the Honda CRF250R and CRF450RX
  • Accossato also lists a matching chain guide, GCH1, and blocks without the screw, RTH3, for this bike
  • No German ABE on file; built for off-road and competition use

Construction and Material Quality

The RCH2 pair replaces the stock blocks at the swingarm ends, each one carrying its own adjusting screw so tension can be set from the same spot on both sides without reaching for a separate tool between races. Accossato offers the pair in black, red or silver, a choice most riders make to match the rest of the bike. Checking that both screws still turn smoothly after a race meeting spent in dust and mud is worth doing before packing the bike away, rather than finding out at the next meeting that one has seized.

Adjusting Between Motos

A moto spent landing hard off jumps and driving out of rutted corners works a chain harder than most trail riding ever does, and it is common for tension to need a small correction before the next gate drops rather than staying exactly as it was set that morning. An adjusting screw built into each block turns that correction into something that takes a minute rather than a tool change and a struggle with a seized bolt, which matters when the next moto is already being called. Turning both screws by the same amount keeps the wheel square to the frame, which is worth checking even under time pressure, since a rushed adjustment on only one side undoes more than it fixes. Riders who race regularly get the most out of blocks built this way, simply because they are doing this exact job more often than anyone riding purely for fun.

Fitment and Compatibility

For the CRF450R, Accossato's application list for the RCH2 runs from 2009 to 2017, and it is worth setting that span against the year on your own frame before buying. Because the CRF250R and the CRF450RX share this section of the swingarm, the same pair of blocks fits either one just as it fits the CRF450R. A chain guide built for this bike carries the code GCH1, and owners who would sooner leave tension to the stock method can fit the RTH3 pair in place of this one, since both mount in the same spot.

Road Approval

Accossato has no German ABE on file for the RCH2, so the blocks are intended for off-road and competition use rather than for use on public roads.

Scope of Delivery

Supplied as one pair of rear axle blocks, left and right, in the colour chosen at checkout.

Specifications

  • Type: Off-road rear axle blocks with adjusting screw
  • Part number: RCH2
  • Colours: Black, silver, red
  • Use: Off-road (enduro, motocross)
  • Fitment: Honda CRF450R (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 CRF450R (2009–2017)
  • Honda CRF250R (2009–2017)
  • Honda CRF450RX (2017)
07 · Support

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