Vortex Racing Kawasaki ZX10 + ZX9 + ZX7 + ZX6 +Ninja 650R +  ZX6R 520 Rear Sprockets

Vortex Racing Kawasaki ZX10 + ZX9 + ZX7 + ZX6 +Ninja 650R + ZX6R 520 Rear Sprockets

Vortex Racing Kawasaki ZX10 + ZX9 + ZX7 + ZX6 +Ninja 650R + ZX6R 520 Rear Sprockets

Our Price: $56.95

RRP: $70.95 save 20%
Part NumberV27 452A-38 Aluminum
Vortex Racing Kawasaki ZX10 + ZX9 + ZX7 + ZX6 +Ninja 650R + ZX6R 520 Rear Sprockets in 520 chain pitch. A Vortex sprocket is a lightweight high-performance alternative to the steel stock sprocket. Use Vortex sprockets to considerably reduce mass and to change your gearing. Available in CAT5 Anodized Colors (with silver "sweeps") or Bare Aluminum, mud grooves and teeth.

Stock Sizing Comparison Chart:

  • Kawasaki ZX10r 11-12 : 39 / 17
  • Kawasaki ZX10r 08-10 : 41 / 17
  • Kawasaki ZX10r 06-07 : 40 / 17
  • Kawasaki ZX10r 04-05 : 39 / 17
  • Kawasaki Z1000 11-12 : 39 / 17
  • Kawasaki Z1000 03-04 : 42 / 16
  • Kawasaki ZX9r 02-03 : 41 / 16
  • Kawasaki ZX9r 98-01 : 41 / 16
  • Kawasaki ZX9r 94-97 : 44 / 16
  • Kawasaki ZX750R 96-03 : 43 / 16
  • Kawasaki ZX750L 93-95 : 44 / 16
  • Kawasaki ZX750RK 91-92 : 42 / 16
  • Kawasaki Ninja 650R 08-10 : 46/15
  • Kawasaki Ninja 650R 06-07 : 46/15
  • Kawasaki ZX6R 07-08 : 43 / 16
  • Kawasaki ZX6R 05-06 : 43 / 15
  • Kawasaki ZX6R 03-04 : 40 / 15
  • Kawasaki ZX6R 01-02 : 40 / 15
  • Kawasaki ZX6R 98-00 : 40 / 15


Made with highest quality aluminum

  • 7075 T6 aluminum is the best grade material for light weight and durability
  • The weight you save on drive components is multiplied as rotating mass
  • Less rotating weight improves acceleration


CNC Machined to tightest tolerances

  • Our unique manufacturing process creates a perfectly concentric sprocket every time
  • This frees horsepower and extends the life of both chain and sprocket
  • Perfected tooth design has less drag and reduces friction for better acceleration and deceleration


Attractive, Smart Design

  • Vortex patented design offers a unique look
  • Standard sprockets have a bright, polished look; clear anodizing helps prevent corrosion
  • Mud grooves and coatings help keep components clean
  • All sprockets available in single tooth increments


NOTE:CAT5 sprockets are custom made and not eligible for return. If you are uncertain whether this is the correct sprocket for your application, please contact us, and a sales associate will double check your order selection to make sure you've selected the correct item. Thank you for your business.

Changing Gearing

  • Adjusting the tooth count in front and rear sprocket changes the way the bike performs.
  • A size increase in the rear sprocket and/or a decrease in the front sprocket will favor torque for increased acceleration.
  • A size decrease in the rear sprocket and/or an increase in the front sprocket will favor top end speed.


Gearing is a key variable in racing. Each rider, bike, and track will demand a different set-up. Though we cannot tell you which will work best for you, the most popular combination for a typical track-day would be a +2 Rear / -1 Front for increaseacceleration without limiting too much top end speed.

Weight Reduction Changing the sprocket to the Vortex aluminum rear sprocket and lightened front sprocket will eliminate considerable mass. This can be further reduced by converting chain and sprockets to a 520 size.

  • In a side-by-side comparison of a typical front and rear sprocket, we found these results:
  • Front Sprocket Weight Savings: .11lb
  • Rear Sprocket Weight Savings: .525lb
  • Total Sprocket Weight Savings: .635lb
  • Estimated Rotating Mass Savings: 2.54lb
  • 520 Conversion Sprocket/Chain savings: 2.145lb
  • Estimated Rotating Mass Savings: 8.58lb


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