Primary Drive Rear Aluminum Sprocket

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Primary Drive Rear Aluminum Sprocket
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Primary Drive Rear Aluminum Sprocket

Our Price: $24.99$39.99

MSRP: $49.99 - You save up to $25.00 (50% off)

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Additional Videos

Motorcycle and ATV Gearing Guide

Primary Drive Rear Aluminum Sprockets

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Details

  • Primary Drive rear aluminum sprockets are made from a high-strength aircraft grade aluminum alloy.
  • Anodized and heat treated for extended wear.
  • Self cleaning grooves prevent mud build up to prolong sprocket and chain life.
  • CNC machined to match original equipment exactly for a perfect fit.
  • 7075 T6 Anodized Aluminum.
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Primary Drive Rear Aluminum Sprocket Reviews

Each review submitted enters you into a
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
 
4.6 / 5.0
287 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
215
46
19
4
3
Value
4.8 / 5
Durability
4.6 / 5
Fitment
4.9 / 5
Performance
4.9 / 5
Recommend it?
Yes (133)
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Good value and quality
Good quality, perfect fit, and a fraction of the price of others! Looks good on the bike too !
March 11, 2019
Kamloops, BC, CA
Age: 25-44
Purchased
3 weeks ago
Gender:
Female
Weight:
101 - 130 lbs.
Height:
5'1 - 5'3
Value
5 / 5
Durability
4 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Looks good
Exactly what its supposed to do

-m-2007 KAWASAKI KX250F--
March 8, 2019
Simi valley, CA, US
Age: 15-24
Purchased
1 month ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Looks good
Looks to be like a quality sprocket, only time will tell.
March 6, 2019
Los Angeles, CA, US
Purchased
1 month ago
Value
5 / 5
Durability
3 / 5
Fitment
5 / 5
Performance
4 / 5
Recommend it?
Yes
good product
fit great lasts pretty close to stock haven't run into any problems overall exactly as advertised
March 1, 2019
orion, MI, US
Age: 25-44
Purchased
10 months ago
Gender:
Male
Weight:
221 - 250 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
4 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Great Sprocket especially for the price
Great sprocket especially for the price. When I first bought this I was skeptical, figured it would wear out super fast. But I was wrong. Has good durability maybe not as good as renthal or pro taper but its not far off. The money saved is worth it. Oh and they look awesome too.

-m-2012 KTM 500 EXC--
March 1, 2019
Discovery Bay, CA, US
Age: 25-44
Purchased
over 3 years ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Perfect
Great value and outstanding durability.

-m-2013 KTM 300 XC-W (E-Start)--
February 25, 2019
Phoenix, AZ, US
Age: 45-64
Purchased
over 3 years ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Primary Drive rear sprocket
I first used Primary Drive sprockets on my KTM 500 EXC. I was so impressed they are now on all three of my KTMs. The quality is as good or better than the BIG name companies and much less expensive. I also use the Primary Drive chains and they are excellent as well.

-m-2018 KTM 250 SX--
February 12, 2019
SoCal, CA, US
Age: 45-64
Purchased
2 months ago
Gender:
Male
Weight:
191 - 220 lbs.
Value
5 / 5
Fitment
5 / 5
Recommend it?
Yes
At this point, just like the front sprocket and new Primary Drive chain, all I have done is to install the sprockets and chain. Everything came as ordered and fit nicely on the bike. How it holds up to use over time will determine its durability, performance, and real value.

-m-2014 BETA 450 RS--
January 17, 2019
Vacaville, CA, US
Age: 65+
Purchased
2 months ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
5 / 5
Fitment
1 / 5
Performance
5 / 5
Recommend it?
Yes
Do not buy for an atv if you race and like easy maintenance!
Do not buy for an ATV if you race... you have to remove the whole axle assembly from the carrier bearing because it doesn’t slide over the sprocket hub or spindle which is the easiest way to swap. You have to remove the spindle nut, spindle, axle nut, rotor, and then the axle to install this.

It does fit, but because it’s round in the center and not diamond shaped to slide right over the spindle and sprocket hub and you can’t just remove the chain and swap sprockets you have to do the entire rear end.

-m-2006 HONDA TRX 450R--
January 3, 2019
Frederick, CO, US
Age: 25-44
Purchased
9 months ago
Gender:
Male
Weight:
131 - 160 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
4 / 5
Fitment
4 / 5
Performance
4 / 5
Recommend it?
Yes
Great price and looks
Fit like it should. Well see how long it lasts 52 tooth 14 primary

-m-2018 HUSQVARNA FE 501--
December 18, 2018
Temecula, CA, US
Purchased
5 months ago
Each question or answer submitted enters you into a:
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Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 17 questions Browse 17 questions and 27 answers
what size of chain does it take?
Tim D on Apr 23, 2017
BEST ANSWER: The size chain will depend on your machine and sprocket sizes. If you could tell me the make, model, and year of your machine along with your front and rear sprocket sizes I can tell you what size chain you will need.
My stock gearing is 13/50 if I got a 49 tooth sprocket would it help my pull more out of my gears ? And second would I have to do anything to my chain or could I keep it the same just maybe have it adjusted tighter on the blocks?
Dyllon B on Dec 30, 2017
BEST ANSWER: A smaller rear/larger front sprocket will give you more top end speed, if your engine has the power for it. Conversely, using a larger rear/smaller front sprocket would give you more acceleration at the expense of top end.
As for your chain, for a single tooth on the rear, you can probably get it tight enough with the adjusters. However, if you have significant time on it, you should replace it along with your new rear sprocket and a new front sprocket. A used chain will have stretched to the point the rollers will not fit the new sprocket teeth properly. You will wear out your new sprocket very quickly.
Why is Red not available for the Betas???
Kelly C on May 28, 2017
BEST ANSWER: Unfortunately, this color is not available for us to get for your machine. However, I will forward along your comment for consideration.
I have a 2013 KTM 350exc. Have 13/48 on now with stock chain. Chain good. Want 50 on rear for more pull. Will stock size work? OEM is 14/45. Thanks.
Donovan M on Jul 10, 2018
BEST ANSWER: I would recommend a new chain with more links. For this gearing, it is recommended to add 4 links to the stock size. What I would do personally is buy a chain longer that is 4+ links longer than stock and then cut it to the length you would like.
If I'm going from a stock14" rear wheel to a 16" rear wheel do I need to change my rear sprocket to accommodate the larger wheel size?
A shopper on Apr 20, 2018
BEST ANSWER: depends on if the type of bike and if the bike has the horsepower to handle it. If it doesn't have the horsepower then I recommend going up in teeth to accommodate the larger wheel. the larger sprocket will help compensate for the larger wheel.
Is the #102-228-0161 sprocket a 420 chain size or 428 ?
Michael W on Feb 8, 2018
BEST ANSWER: Hello,
The sprocket is a 520 chain size.
Anybody else have trouble with this sprocket fitting a Cobra CX50-Sr? I purchased the sprocket under OEM and the bolt holes are metric and I had to tap them to fit..
A shopper on Sep 28, 2017
BEST ANSWER: I have not used my Primary Drive sprockets on a Cobra, I have had a few sets for my KTMs over the years & my friends too ,and we had absolutely no fitment issues on front or rear sprockets. I am also using stock KTM bolts also.Make sure (if the bike was bought used) that the bolts are OEM certified & tapered correctly & you have no oblong holes on wheel hub from loose or worn/incorrect fasteners.
Will this work on a 2008 ktm 250xcf-w?
Michael S on Sep 29, 2018
BEST ANSWER: To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application. If you have a 2019 year model but don't see your machine as an option, please contact a tech via Live Chat or call us at 1-800-336-5437 for assistance.
I'm changing my rear sprocket to a 49 from a 43 and front from 13 to 14 on a wr250R. Ca I use my stock chain?
Alex S on May 30, 2018
BEST ANSWER: No because you will need 6 more links longer than stock.
Will 51 tooth become available in black again soon?
marc h on May 14, 2018
BEST ANSWER: I would be happy to check. What is the make, model, and year this would go on?
2005 400ex, Doesnt have enough inside diameter cut out to mount on the back side like the stock sprocket..if i mount to the front side the sprocket alignment is way off. Looks like I am out 40$ unless someone has a suggestion?
robert d on May 8, 2018
BEST ANSWER: Please call us at 1-800-336-5437 or email us at sales@rockymountainatv.com with pictures of the problems you are having. Once we have this information we will be able to further assist you.
Will it fit on a 2017 ssr 189?
A shopper on Dec 5, 2017
BEST ANSWER: To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application. If you have a 2018 year model but don't see your machine as an option, please contact a tech via Live Chat or call us at 1-800-336-5437 for assistance.
Where are these sprockets made?
MICHAEL O on Oct 25, 2017
BEST ANSWER: they are made in Taiwan.
What is the stock tooth count for the rear sprocket on a 2008 KTM 85sx?
Danny H on Oct 16, 2017
BEST ANSWER: The stock rear sprocket size is a 46 tooth.
How do I get this in blue for my Crf250R? Will the Yamaha sprocket fit on 2013?
Jason B on Sep 8, 2017
BEST ANSWER: I am not sure that the yamaha sprocket will work. we only sell the most popular colors for each bike.
Will this work on a 1997 YZ 125?
Stevan L on May 23, 2017
BEST ANSWER: To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application. If you have a 2017 year model but don't see your machine as an option, please contact a tech via Live Chat or call us at 1-800-336-5437 for assistance.
Why is this only available in 50 or less for a YZ250? I want to go up a tooth. Ridiculous.
Bob W on Dec 30, 2017
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