Primary Drive Rear Aluminum Sprocket

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Displaying parts for your 2008 KTM 250 XC-W (E-Start)

Primary Drive Rear Aluminum Sprocket
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Primary Drive Rear Aluminum Sprocket

Fits: 2008 KTM 250 XC-W (E-Start)

Our Price: $31.00$39.99

MSRP: $49.99 - You save up to $18.99 (38% off)

View Product DetailsSee stock sizes for your machine (Machine Specs)

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Additional Videos

Motorcycle and ATV Gearing Guide

Primary Drive Rear Aluminum Sprockets

How to - Renthal Chain and Sprocket Install Instructions

How to - Chain And Sprocket Replacement

Primary Drive RDO Chain and Aluminum Sprocket

RM YouTube Channel

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.

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
238 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
176
38
18
4
2
Value
4.9 / 5
Durability
4.7 / 5
Fitment
4.9 / 5
Performance
4.8 / 5
Recommend it?
Yes (85)
Value
5 / 5
Durability
5 / 5
Fitment
4 / 5
Performance
5 / 5
Recommend it?
Yes
Awsome sprockets
Primary drive makes great sprockets there light and durable. Great value too. I've been using primary drive for 8 yrs and no complaints.

-m-2015 HONDA CRF450R--
User submitted image
Added Feb 16, 2018
February 16, 2018
buffalo, NY, US
Age: 25-44
Purchased
1 month ago
Gender:
Male
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Works great for ktm 50
The price of this Sprocket is about half the cost of the bigger brands and works just as good. Made of the same material too so your just paying twice as much for the name of other brands. Orange looks great and color has not faded after 3 months of continuous use. Mounted on 17 ktm 50sx.
February 5, 2018
Yucaipa , CA, US
Age: 25-44
Purchased
2 weeks ago
Gender:
Male
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Fit well
Fit was perfect. Anodizing seems well done.
Have not ran the sprocket yet (winter) but I expect no issues
February 2, 2018
Ligonier, PA, US
Age: 25-44
Purchased
2 weeks ago
Gender:
Male
Weight:
251 - 280 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Why pay more????
These sprockets are made from the same aluminum and look just as good, but way less expensive. Last just as long as the more expensive brands.

-m-2017 HONDA CRF450R--
January 30, 2018
Meridian, MS, US
Age: 45-64
Purchased
1 month ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'4 - 5'6
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Just what my bike needed!
High quality. Nice fit and finish. Self cleaning a bonus.

-m-2017 KTM 450 SX-F--
January 29, 2018
orlando, FL, US
Age: 45-64
Purchased
1 month ago
Gender:
Male
Weight:
221 - 250 lbs.
Height:
5'10 - 6'0
Value
4 / 5
Durability
3 / 5
Fitment
5 / 5
Performance
3 / 5
Recommend it?
Yes
So/so
Fitted great, appears to be fine quality. I deducted my rating for a couple reasons however. The mud grooves are only on one side of the sprocket, that is pretty lame. Second, it only came in black for my bike and I know from experience that will not stay looking nice for long, wish it was bare aluminum. Also wish they made a steel version for my bike, so the durability would be better.

-m-2015 BETA 300 RR--
No mud grooves on inside?!
User submitted image
January 19, 2018
Rigby, ID, US
Age: 25-44
Purchased
1 month 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
Great Product! and Great Value
Defiantly recommend over other sprockets. With its price, durability and looks. Cant beat it. The only sprocket I use on my sons KTM 65.

-m-2013 KTM 65 SX--
January 4, 2018
NORTHPORT, FL, US
Age: 25-44
Purchased
5 months ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
6'1 - 6'3
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Good Sprockets
I wanted a silver sprocket in a non stock size and Rocky Mountain ATV/MC has lots of choices. The only negative is these are 3 ounces heavier than a Pro-X aluminum in similar
sizes.
December 29, 2017
Nashville, TN, US
Purchased
2 months ago
Value
5 / 5
Fitment
5 / 5
Recommend it?
Yes
Haven’t used it much but seems like a quality aluminum sprocket. Looks great as well

-m-1995 HONDA TRX 300EX--
User submitted image
Added Dec 29, 2017
December 29, 2017
Louisville, KY, US
Purchased
2 months ago
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
I love primary drive products and have used them for years quality and affordable easy to install
I love primary drive products and have used them for years quality and affordable easy to install

-m-2017 HUSQVARNA FC 350--
December 29, 2017
Shelton , WA, US
Age: 25-44
Purchased
1 month ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'10 - 6'0
Each question or answer submitted enters you into a:
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$500 gift card quarterly drawing!
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 11 questions Browse 11 questions and 13 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.
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.
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.
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: long lasting
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.
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.
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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