RFX  |  SKU: FXRS 31-48 99ST

RFX PRO SERIES HCS REAR SPROCKET YAMAHA YZ125-250 YZF250-450 99-24 VARIOUS SIZES

£2799

Description

 

RFX Pro Series HCS Steel Rear Sprocket

RFX Pro Series Hi-Carbon Steel (HCS) sprockets are perfect for the rider looking for longevity and value for money from their sprockets while offering genuine quality not found elsewhere.

Certified Hi-Carbon Steel offers unbeatable wear properties and its added strength over mild steel allows for a lighter profile design, this means the weight increase over aluminium is kept to a minimum.

RFX HCS sprockets are precision Laser cut for more precision and tighter tolerances.

Pro Series HCS Sprocket Features

• Certified Hi-Carbon Steel
• CNC Laser Cut.
• CAD designed profile for lightness.
• Mud clearing grooves to reduce wear.
• Rigid design increases torsional strength.
• Tighter tolerances improve performance.

 

Bike Year Pitch Part Number
YZ 125 99-01 520 FXRS 31-48 
YZ 125 05-20 520 FXRS 31-48 
YZ 125 02-04 520 FXRS 31-49 
YZ 250 02-05 520 FXRS 31-49 
YZ 250 99-01 520 FXRS 31-50 
YZ 250 05-20 520 FXRS 31-50 
YZF 250 01-04 520 FXRS 31-48 
YZF 250 05-11 520 FXRS 31-49 
YZF 250 12-20 520 FXRS 31-50 
YZF 400 99 520 FXRS 31-48 
YZF 426 00-02 520 FXRS 31-48 
YZF 450 03-04 520 FXRS 31-48 
YZF 450 10-13 520 FXRS 31-48 
YZF 450 06-09 520 FXRS 31-49 
YZF 450 14 520 FXRS 31-49 
YZF 450 05 520 FXRS 31-51 
YZF450 15-20 520 FXRS 31-48 
WRF 250 07-14 520 FXRS 31-50 
WRF 250 01-06 520 FXRS 31-52 
WRF 400 99-01 520 FXRS 31-50 
WRF 426 00-02 520 FXRS 31-50 
WRF 450 03-20 520 FXRS 31-50 


Fitting Instructions

• Start with bike on a stand with the rear wheel raised from the ground.
• Remove chain and wheel from bike.
• While holding the Hex key loosen the nuts with a spanner.
• Remove all nuts and old sprocket.
• Clean around the hub making sure clean and free of debris.
• Take the new sprocket and place on hub ensuring a nice snug fit making sure the bolt holes are in position.
• Clean sprocket bolts & nuts.
• Apply Blue Loctite to each bolt and insert in the holes.
• Thread nuts on to bolts by hand ensuring locking seals are intact and in good condition.
• Hold Hex key in place and tighten nuts even pattern.
• Torque nuts and bolts in accordance to your owner’s manual.
• Put wheel back in bike making sure chain is corrected aligned and tightened to manufacturer’s specification.

 

 

 

 

 

 

 

 

Deliveries & Return
  • Free Standard Delivery on orders over £50
  • £4.99 Standard Delivery on orders under £50
  • £6.99 Express Delivery Option
  • Extended Christmas Returns Until 10th of January 2025

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RFX

RFX Pro Series HCS Rear Sprocket Yamaha YZ125-250 YZF250-450 99-24 Various Sizes

£2799

 

RFX Pro Series HCS Steel Rear Sprocket

RFX Pro Series Hi-Carbon Steel (HCS) sprockets are perfect for the rider looking for longevity and value for money from their sprockets while offering genuine quality not found elsewhere.

Certified Hi-Carbon Steel offers unbeatable wear properties and its added strength over mild steel allows for a lighter profile design, this means the weight increase over aluminium is kept to a minimum.

RFX HCS sprockets are precision Laser cut for more precision and tighter tolerances.

Pro Series HCS Sprocket Features

• Certified Hi-Carbon Steel
• CNC Laser Cut.
• CAD designed profile for lightness.
• Mud clearing grooves to reduce wear.
• Rigid design increases torsional strength.
• Tighter tolerances improve performance.

 

Bike Year Pitch Part Number
YZ 125 99-01 520 FXRS 31-48 
YZ 125 05-20 520 FXRS 31-48 
YZ 125 02-04 520 FXRS 31-49 
YZ 250 02-05 520 FXRS 31-49 
YZ 250 99-01 520 FXRS 31-50 
YZ 250 05-20 520 FXRS 31-50 
YZF 250 01-04 520 FXRS 31-48 
YZF 250 05-11 520 FXRS 31-49 
YZF 250 12-20 520 FXRS 31-50 
YZF 400 99 520 FXRS 31-48 
YZF 426 00-02 520 FXRS 31-48 
YZF 450 03-04 520 FXRS 31-48 
YZF 450 10-13 520 FXRS 31-48 
YZF 450 06-09 520 FXRS 31-49 
YZF 450 14 520 FXRS 31-49 
YZF 450 05 520 FXRS 31-51 
YZF450 15-20 520 FXRS 31-48 
WRF 250 07-14 520 FXRS 31-50 
WRF 250 01-06 520 FXRS 31-52 
WRF 400 99-01 520 FXRS 31-50 
WRF 426 00-02 520 FXRS 31-50 
WRF 450 03-20 520 FXRS 31-50 


Fitting Instructions

• Start with bike on a stand with the rear wheel raised from the ground.
• Remove chain and wheel from bike.
• While holding the Hex key loosen the nuts with a spanner.
• Remove all nuts and old sprocket.
• Clean around the hub making sure clean and free of debris.
• Take the new sprocket and place on hub ensuring a nice snug fit making sure the bolt holes are in position.
• Clean sprocket bolts & nuts.
• Apply Blue Loctite to each bolt and insert in the holes.
• Thread nuts on to bolts by hand ensuring locking seals are intact and in good condition.
• Hold Hex key in place and tighten nuts even pattern.
• Torque nuts and bolts in accordance to your owner’s manual.
• Put wheel back in bike making sure chain is corrected aligned and tightened to manufacturer’s specification.

 

 

 

 

 

 

 

 

Colour

  • Steel

Teeth

  • 48
  • 49
  • 50
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