Accossato off-road rear axle blocks RTY3 for Yamaha YZ250F, black colour⟲ 360° — drag me
02 · Data & docs

The facts.

Technical data
BrandAccossato
TypeOff-road rear axle blocks without adjusting screw
Part numberRTY3
ColoursBlack, silver, blue
UseOff-road (enduro, motocross)
FitmentYamaha YZ250F (2014–2018)
CheckCompare with the application list before ordering
Road approvalNone documented, off-road and competition use
DescriptionThe whole story▼

Some YZ250F owners replace a worn axle block with exactly what was there before, reasoning that the stock method has worked fine for the life of the bike so far and sees no reason to change now. Accossato's RTY3 fits that approach, covering the YZ250F built between 2014 and 2018 without an adjusting screw on either block.

Key Features

  • Rear axle blocks for the Yamaha YZ250F, 2014 to 2018
  • Accossato code RTY3, one pair, left and right
  • Chain tension set the stock way, with no built-in adjusting screw
  • Blue, black or silver
  • Same pair also listed for the Yamaha YZ450F
  • Accossato's RCY3 covers the same bike with an adjusting screw, for riders who prefer that method
  • No German ABE on file; built for off-road and competition use

Construction and Material Quality

The RTY3 pair takes up the same position as the stock blocks, leaving chain tension to the usual nut and marks on the swingarm. Blue, black or silver make up the finishes available, usually chosen to suit the rest of the bike. A block that has cracked or no longer sits square after hard use is worth replacing rather than trusted through another race.

Replacing Like for Like

A worn part does not automatically call for an upgrade, and plenty of riders servicing a YZ250F are simply looking to put right what has failed rather than reconsider how the bike is set up in the process. The RTY3 answers that need directly, swapping a tired or damaged axle block for one that works in exactly the same way the factory part did. For someone who already knows the stock adjustment method well, that straightforward replacement is worth more than a feature they were not asking for.

Fitment and Compatibility

The RTY3 shares its application window with the RCY3 on this bike, both covering the YZ250F from 2014 to 2018. The identical block is also listed for the Yamaha YZ450F. Checking the exact frame year against Accossato's list remains worth doing before ordering, given how narrow this window is compared with some other chain parts.

Road Approval

Accossato lists no German ABE for the RTY3, 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 you choose.

Specifications

  • Type: Off-road rear axle blocks without adjusting screw
  • Part number: RTY3
  • Colours: Black, silver, blue
  • Use: Off-road (enduro, motocross)
  • Fitment: Yamaha YZ250F (2014–2018)
  • 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▼
  • Yamaha YZ250F (2014–2018)
  • Yamaha YZ450F (2014–2017)
07 · Support

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08 · Paddock

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