September 2010

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Rear Sprockets

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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
(see below for details).

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

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FINISHES

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Standard Sprocket Clear anodized for corrosion protection and a polished look. For street or dirt.�	�F5 Sprocket �Black, PTFE Hardcoated �Adds longevity and lubricity. �For street or dirt.�

CAT5 Sprocket
Color anodized with silver sweeps, mud grooves and teeth. The same ultra precise design as our standard sprocket with a more attractive appearance.

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TYPES

Freestyle Sprockets Custom made up to�66�teeth Sturdy and light weight Clear anodizing offers protection and adds a bright finish
Street Sprockets Tested and preferred by top Superbike and Prostar teams Bright silver polished look or jet black 'F5' black PTFE hardcoat Click here for technical info on PTFE.��
Flat Track Sprockets Self cleaning mud grooves Available for all Flat Track bikes and wheel combinations Bright silver polished look or jet black 'F5' PTFE hardcoat	�
MX Sprockets Self cleaning mud grooves Bright silver polished look or jet black 'F5' PTFE hardcoat Used and tested by top AMA teams

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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

*We used a 41 tooth CBR1000 rear sprocket and Hayabusa front sprocket. Chain comparisons were between 120-link RK(GXW) chains.

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FAQ's

Q: DOES VORTEX MAKE A STEEL REAR SPROCKET?

A: We focus on high performance race parts and therefore only manufacture
aluminum rear sprockets

� Q:�HOW CAN�I GET A SPROCKET FOR AN AFTERMARKET WHEEL?�
A: These are available by telephone order only at 800-440-3559.
You may want to have the old sprocket handy for a quick measurement.

Q:�WILL AN ALUMINUM SPROCKET LAST AS LONG AS MY STOCK STEEL SPROCKET?
A: Usually not.� Aluminum is for high performance and the light weight compromises longevity.� The biggest factor will be the quality and care of your chain; if it is worn or poorly maintained it will wear out your aluminum sprocket.

Q:�WILL A VORTEX ALUMINUM SPROCKET HOLD UP ON MY DRAG BIKE?�
A: YES! Many AMA Prostar drag teams swear by Vortex lasting longer than competing brands.

Q:�HOW IS A VORTEX SPROCKET MADE DIFFERENTLY?
A:�There are many ways Vortex is constructed to keep it lasting longer than others.� One way to ensure tight concentricity is to eliminate the time-saving method called 'gear hobbing' and keeping the material stationary throughout it's complete construction. This ensures a tighter tolerance; thus making a longer lasting sprocket and freeing horsepower.�We also have our own unique tooth design that we've created to reduce wear.

Q:�HOW MUCH LONGER WILL THE F5 SPROCKET LAST?
A: We tested the hardcoated sprockets�on the Jordan Superbikes to last 30% longer than our standard sprocket. And that was before we thought to coat the sprocket with PTFE!

Q:�WHAT IS PTFE?�
A: Simply put, it is a friction-free coating similar to a non-stick cooking pan.� When coupled with the hard anodizing, this will keep your sprocket cleaner and lasting longer.
Click here for technical info on PTFE.

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