Accossato off-road rear axle blocks RCM1 for KTM 150SX, black colour⟲ 360° — drag me
02 · Data & docs

The facts.

Technical data
BrandAccossato
TypeOff-road rear axle blocks with adjusting screw
Part numberRCM1
ColoursBlack, silver, orange
UseOff-road (enduro, motocross)
FitmentKTM 150SX (2009–2018)
CheckCompare with the application list before ordering
Road approvalNone documented, off-road and competition use
DescriptionThe whole story▼

Fitting a smaller rear sprocket on a 150 SX to tighten up the gearing changes more than the feel of the throttle; it also changes how far back the axle has to sit to keep the chain at the right tension, which is exactly the adjustment the axle blocks are there to make. Accossato's RCM1 covers the 150 SX built from 2009 to 2018, a pair of rear axle blocks with their own adjusting screw built into each one.

Key Features

  • Rear axle blocks for the KTM 150 SX, 2009 to 2018
  • Accossato code RCM1, supplied as a pair, left and right
  • Each block carries its own adjusting screw for chain tension
  • Orange, black or silver
  • Also listed for a wide run of Husqvarna four-strokes sharing this swingarm
  • Accossato's RTM1 covers the same bike without the adjusting screw
  • No German ABE on file; built for off-road and competition use

Construction and Material Quality

The RCM1 pair sits at the ends of the swingarm in the slots the stock blocks occupy, and each one has an adjusting screw worked into its body so the rear wheel can be moved back and forth without a separate tool to lever it into place. Both blocks share the same finish, offered in orange, black or silver, a choice worth matching to the rest of the bike since the blocks sit in plain view once the chain guard is removed. Checking that the screw still turns smoothly is worth doing at each service.

Changing the Gearing for a New Track

Swapping to a smaller or larger rear sprocket is a common way to suit a 150 SX to a particular track, tighter gearing for motocross jumps or taller gearing for faster enduro trails, and every change of sprocket size moves the point at which the chain sits at the correct tension. An axle block with its own screw turns that follow-up adjustment into a quick, repeatable job rather than wrestling the wheel back by hand while trying to keep both sides even. Doing both sides the same number of turns matters as much as getting the tension right, since an uneven adjustment leaves the rear wheel pointing slightly off the frame's centreline.

Fitment and Compatibility

Accossato lists the RCM1 for the 150 SX across 2009 to 2018 on its own application list, and the identical pair also fits a long run of Husqvarna four-strokes built on the same swingarm, among them the FE 450 and the TC 250. Comparing the exact frame year against the application list is worth doing regardless, since the listed years span several seasons of the bike. Owners who prefer the stock method of chain adjustment, without a built-in screw, can fit Accossato's RTM1 instead; both pairs mount in the same position.

Road Approval

No German ABE is on file for the RCM1, so Accossato lists it 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 chosen at checkout.

Specifications

  • Type: Off-road rear axle blocks with adjusting screw
  • Part number: RCM1
  • Colours: Black, silver, orange
  • Use: Off-road (enduro, motocross)
  • Fitment: KTM 150SX (2009–2018)
  • 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 150SX (2009–2018)
  • 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 200EXC (2000–2016)
  • KTM 250EXC-F (2000–2018)
  • KTM 250SX (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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08 · Paddock

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