Accossato off-road rear axle blocks RTM1 for KTM 250SX, black colour⟲ 360° — drag me
02 · Data & docs

The facts.

Technical data
BrandAccossato
TypeOff-road rear axle blocks without adjusting screw
Part numberRTM1
ColoursBlack, silver, orange
UseOff-road (enduro, motocross)
FitmentKTM 250SX (2000–2018)
CheckCompare with the application list before ordering
Road approvalNone documented, off-road and competition use
DescriptionThe whole story▼

The manual that came with a 250 SX explains chain adjustment the stock way, by nut and marks on the swingarm, and plenty of owners never see a reason to depart from instructions that have worked fine for decades of similar bikes. Accossato's RTM1 fits that approach exactly, replacing the rear axle blocks on the 250 SX built between 2000 and 2018 without adding a screw to either one.

Key Features

  • Rear axle blocks for the KTM 250 SX, 2000 to 2018
  • Accossato code RTM1, one pair, left and right
  • Chain tension set the stock way, with no built-in adjusting screw
  • Orange, black or silver
  • Also listed for a wide run of Husqvarna four-strokes on this swingarm
  • Accossato's RCM1 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 RTM1 pair sits in the same position as the stock blocks, holding the rear wheel without altering how tension has always been set on this bike. Orange, black or silver cover the finishes on offer, usually chosen to sit with the rest of the bike's colours. A block that has taken a hard knock and no longer looks true along its edge is worth replacing rather than left to wear on.

Following the Manual Rather Than Changing It

Plenty of owners never open the manual again after the first service, but the method it describes for setting chain tension on a 250 SX, counting marks on the swingarm or lining up a reference point, stays with them simply because it was the first way they learned and it still works. The RTM1 keeps that method unchanged, swapping a worn or damaged axle block for a fresh one without introducing an adjusting screw that would need a different habit to use properly. For a rider who already trusts the stock routine, that continuity is worth more than a feature they were never going to use.

Fitment and Compatibility

The RTM1 and its screw-equipped sibling share the same application window on this bike, both covering the 250 SX from 2000 to 2018. A run of Husqvarna four-strokes built on the shared swingarm takes the identical block. Confirming the exact frame year against Accossato's list is still worth the effort before ordering, given how long this window runs.

Road Approval

Accossato lists no German ABE for the RTM1, 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: RTM1
  • Colours: Black, silver, orange
  • Use: Off-road (enduro, motocross)
  • Fitment: KTM 250SX (2000–2018)
  • 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▼
  • KTM 250SX (2000–2018)
  • Husqvarna FC 250 (2014–2015)
  • Husqvarna FC 350 (2014–2015)
  • Husqvarna FC 450 (2014–2015)
  • Husqvarna FE 250 (2014–2018)
  • Husqvarna FE 350 (2014–2018)
  • Husqvarna FE 450 (2014–2018)
  • Husqvarna FE 501 (2014–2018)
  • Husqvarna TC 125 (2014–2015)
  • Husqvarna TC 250 (2014–2016)
  • Husqvarna TE 125 (2014–2016)
  • Husqvarna TE 250 (2014–2017)
  • Husqvarna TE 300 (2014–2018)
  • Husqvarna TX 125 (2017–2018)
  • KTM 125EXC (2000–2018)
  • KTM 125SX (2000–2018)
  • KTM 150SX (2009–2018)
  • KTM 200EXC (2000–2016)
  • KTM 250EXC-F (2000–2018)
  • KTM 250SX-F (2000–2018)
  • KTM 300EXC (2000–2018)
  • KTM 350EXC-F (2000–2018)
  • KTM 450EXC-F (2000–2018)
  • KTM 500EXC-F (2000–2018)
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