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VORTEX RACING REAR STEEL SPROCKET

Available in 39, 40, 41, 42, 43 or 44 Tooth

525 Chain Pitch

2004-2021 Kawasaki Ninja ZX-10R  



This listing is for 1 Vortex Rear Sprocket. When paying please write the SPROCKET TOOTH COUNT you want us to ship in your PayPal payment notes. You can also email us your sprocket tooth count information before / after check-out via eBay messages.


Product Features:

Vortex Steel Sprockets are made from high tensile carbon steel to last long under the toughest conditions. Precision manufactured and induction hardened to precise tolerances.

  • Manufactured from carbon steel and are electro-plated satin black to resist corrosion
  • Ideal Tooth Design for perfect chain hold and release
  • Each sprocket is cupped down from the tooth ring to the body to reduce as much weight as possible
  • Maximum wear resistance. Hardened teeth ensure that the sprocket will hold up to many miles without affecting strength
  • All sprockets available in single tooth increments

ORDERING INSTRUCTIONS:  Refer to the sprocket tooth counts available above. When paying write the SPROCKET TOOTH COUNT you want us to ship in your PayPal payment notes. For example: if you want a 40 tooth blue sprocket write: "40 TOOTH BLUE" in the notes to seller section of your PayPal payment. You can also email us your sprocket tooth count information before / after check-out.

IF YOU DO NOT GIVE US THE SPROCKET TOOTH COUNT WITH YOUR PAYMENT, OR IN A SEPARATE EMAIL YOUR ORDER WILL BE DELAYED WHILE WE CONTACT YOU.  ALSO, IF YOU ARE PAYING WITH A CREDIT CARD, PLEASE LET US KNOW SO WE CAN SEND THE CORRECT INVOICE.


Do you need a new chain, or front sprocket to go with your new Vortex rear Sprocket? Click on the photos below to check out the chains, and Vortex front sprockets we carry! It is highly recommended that you purchase a new chain when buying new sprockets as an old chain will cause undo wear and tear on the new sprockets. 




Vortex Front Sprockets



Motorcycle Chains



SpeedoDRD Speedometer Calibrator




After changing the stock gearing ratio of your motorcycle your speedometer will not be accurate and could have an error of up to 20% (most motorcycles come from the factory with a 10% speedometer error already!). 
This will cause the Speedomoter to read much faster than your actual speed and also show more miles traveled then you are actually riding. The solution is the SpeedoDRD!  Click on the photo above to check out the SpeedoDRD

SpeedoDRD Speedometer Calibrator Features:

  • The smallest electronic speedometer/odometer calibration device in the world.
  • Saves max speed, which can be recalled to your stock speedometer gauge
  • Widest calibration range on the market (ratio based and multiplier/divider capability)
  • Built in testing mode to ensure proper installation
  • Easier to setup than any other device on the market
  • Simple plug-in installation for many vehicles using factory OEM connectors
  • Works for any 3 wire Hall Effect Sensor, or 2 wire Ground Switch Sensors
  • Works for vehicles which display MPH or KPH
  • Ability to convert MPH to KPH, or KPH to MPH
  • Ratio based correction in 0.1% steps, up to 99.9% + or -
  • Fractional frequency multiplier & divider with 0.1 steps, up to 99.9 + or -
  • Weather proof design to protect against the elements
  • 18" wiring harness (1.5ft)
  • 3 year product replacement warranty
  • Made in the USA 


"We carry all Vortex Racing Products. If you have any questions about fitment for a specific motorcycle, or would like to check the availability of a part please feel free to contact us. Our mission is to provide you with the best customer service possible, and we are more then happy to help you with all of your motorcycle needs. - Team Podium"



PLEASE ALLOW 4-8 BUSINESS DAYS FOR DELIVERY. 

6% SALES TAX APPLIES TO ALL ORDERS SENT TO MI.