RFX  |  SKU: FXRS 31-48 ALBU

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

£3999 £4499

Description

RFX Pro Series Armalite Rear Sprocket Yamaha YZ125-250 YZF250-450 99-23 

RFX Pro Series Armalite sprockets are designed and tested at the highest level by top World and British championship race teams.

New dual ring design gives the ultimate sprocket performance, reduced weight thanks to a 7075-T6 aluminium centre and long lasting teeth life thanks to the high carbon steel outer.

Armalite sprockets also feature a hexagon drive interface between the inner and outer ring, this is revolutionary technology for sprockets and maximises drive between the two parts and reduces the force on the rivets to zero unlike the competition.  

Pro Series Armalite Sprocket Features:-

  • CNC 7075 Aerospace aluminium Inner ring
  • HCS Outer Ring
  • Hex-Drive location between inner & outer ring
  • CAD designed profile for lightness.
  • New style mud clearing grooves to reduce wear.
  • Rigid design increases torsional strength.
  • Colour anodised for that factory bike look.

 

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

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Klarna
  • Maestro
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

RFX

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

£3999 £4499

RFX Pro Series Armalite Rear Sprocket Yamaha YZ125-250 YZF250-450 99-23 

RFX Pro Series Armalite sprockets are designed and tested at the highest level by top World and British championship race teams.

New dual ring design gives the ultimate sprocket performance, reduced weight thanks to a 7075-T6 aluminium centre and long lasting teeth life thanks to the high carbon steel outer.

Armalite sprockets also feature a hexagon drive interface between the inner and outer ring, this is revolutionary technology for sprockets and maximises drive between the two parts and reduces the force on the rivets to zero unlike the competition.  

Pro Series Armalite Sprocket Features:-

 

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 

Colour

  • Blue

Teeth

  • 48
  • 49
  • 50
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