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Renthal Twin Ring Sprocket Kit
Renthal Twin Ring Sprocket Kit

$150.39 - $277.69
13% Off - Save up to $22.58

Description See Also: 43 Reviews 9 Questions Fitment Part Numbers
Item #REN001Z

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43 Reviews
4.7 out of 5 stars
5 Star   32 4 Star   9 3 Star   1 2 Star   1 1 Star   0
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All Reviews
Verified Purchaser
Durability 5/5 Ease of Installation 4/5 Performance 5/5 Style 5/5

Durability 2/5 Ease of Installation 4/5 Performance 5/5 Style 5/5
Losing pins

The cold rolled pins are small threaded Allen head pins that thread through the entire socket between the two matierals. After 20 or so hours on my twin ring / yz450f combo I’ve noticed that I’m missing 4 of the pins and they took a chuck out of my chain tensioner as they fell out. Personally I’d rather go for the one piece sprocket and change it a few hours earlier. Twin ring gives you another part that needs. He king before each ride

Verified Purchaser
Vallejo, CA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5
Amazing quality

Had doubts about going Twinring, but glad I did. Quality, and looks are on point! Have never had a completely round sprocket, but this one was very close. Not much change in tight spots. Weight was noticeable in the hand, but not enough to be concerned.

Verified Purchaser Top 500
San Rafael, CA, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5
Best bang for the buck

This sprocket outlasts the competition by a healthy margin, have run this for many years & I wont waste my money on anything else

Verified Purchaser
Durability 3/5 Ease of Installation 3/5 Performance 4/5 Style 5/5

Sprocket and chain set looks great, fits great, and was super easy to order. Motosport was fast with their shipping as always!! Only ridden once since the install so I can't speak to the durability yet, but it's much beefier than my old sprocket and chain so I don't see that being an issue!!

Verified Purchaser
Washougal, WA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5

I have 20 hours on this kit, riding sand tracks due to weather. I'll be buying the twin ring set up from now on, excellent buy...

Verified Purchaser
Durability 5/5 Ease of Installation 4/5 Performance 5/5 Style 5/5

Good price, very durable.

Verified Purchaser
Las Vegas, NV, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5
Expensive but so far works good

I purchased the twin ring sprocket about a year ago and it is still going strong. The DID x-ring chain is also moves much easier than the renthal o-ring chain I had before.

Verified Purchaser
Huntington Beach, CA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5
Great combo!

High quality components front, rear sprockets and chain. Easy to install.

Verified Purchaser
Ease of Installation 4/5 Performance 5/5 Style 5/5

the best

See 10 More Reviews
9 Questions
Answered:   9
Not Yet:   0
Q: I have a 2014 kx450f wanted to buy this drive combo but not sure on the chain....what would you recommend? I do track and desert riding.
2 years 7 months ago
MotoSport Staff Expert
2 years 7 months ago
A: I personally run the DID ERT2 chain. Very good chain.
Q: I want to preper my ktm 350sxf for desert race what sprocket size I should use ?
Over 3 years ago
MotoSport Staff Expert
Over 3 years ago
A: For more top end you would want to go up 1 tooth in the front and/or down 1 or 2 teeth on the rear from stock gearing (14/50).
Q: Chain Length
Over 4 years ago
Hey, I have an XR650R and my stock chain had 110 links with 14/47 gearing but Renthal only offers a 120 link chain with the 14/47 sprockets. Will the larger chain still work alright? Otherwise I found a Renthal street chain on Amazon with 110 links, should I go with the street chain?
Expert MotoSport Staff
Over 4 years ago
A: The chain's come in 120 links to allow for the many different gearing options and bikes. You will just need to cut it down to fit. A chain breaker will push the pin out or you can grind the top of the pin off and the chain will pull apart. Just make sure not to cut it too short.
Q: Cr 125 increase rear sprocket size
Over 4 years ago
my chain and sprockets need to be replaced. im thinking twin ring. i want to go from a 52 to a 53 im not worryied about the to speed of the bike. ive been on this bike for 8 years. do you think i will be able to feel a difference ?
MotoSport Staff Expert
Over 4 years ago
A: You will likely only notice a small difference in top speed going just one tooth up on the rear sprocket. You will likely notice the bike accelerates to the top speed quicker but the overall top speed of the bike won't change drastically.
Q: What sprokets should i run on my 09 kx250f?
Over 5 years ago
What if I run a 14 and 50 tooth sprocket set instead of the 13 and 48 tooth set up?
Over 5 years ago
A: Dewey, the 14 front has the effect of making the bikes gearing taller. In fact for each tooth you raise or lower on the front sprocket, it is aproximately equal to 3 tooth change of the rear sprocket. So, your 14 tooth sprocket in front is like dropping your rear sprocket 3 teeth. Since you want to run a 50 in the rear, which is 2 teeth shorter than stock, your net change from stock 13/48 will be a gearing set up that is slightly taller than stock. For a very detailed gearing setup guide I reccomemd a website called gearingcommander. Com. It is a non-profit site put together by bike engineers and allows you to see the results of any gearing and chain changes you may wish to make with a number of graphs and charts. Youcan plug your year make and model in and then enter differnt gear options in the data fields.
MotoSport Staff
Over 5 years ago
A: Gearing is completely a personal preference. First i would ask whether you want more acceleration and to tighten the gears up, or do you want to spread the gears out and have them pull farther. By running a 14/50 you would slightly shorten the gearing up. This means you will gain a some acceleration but will need to shift sooner. The most common gear ratio for average tracks is a 13/49 combination on the 2009 KX250f.
Q: Sprocket hardware
Over 5 years ago
Are you able to use the stock hardware (bolts) to fasten the new sprocket to the hub?
MotoSport Staff
Over 5 years ago
A: Yes you can use the stock hardware to attach the sprocket to your hub. It is recommended to replace the hardware when changing sprockets though due to high stress they endure. There are after market sprocket bolt kits that are reasonably priced for a new set of hardware.
Q: My 06 yz478f what chain is the best isnt there a step up from the x-ring icant seem to find it.
Over 5 years ago
The bike is completely built. Money isnt an issue.
MotoSport Staff
Over 5 years ago
A: The X-ring chains really are the top of the line style chain. There are also Z-ring chains but is debatable as to which is better. O-ring chains with a single wide point of contact will tend to last a little longer but have much higher friction than the X-ring or Z-ring chains. One of the best X-ring chains out there is the DID ERV3. Incredibly high quality chain that you cant go wrong with.
Over 5 years ago
A: My reccomendation for this type of high power setup is Renthal Twin ring, Renthal Steel Front, matched with Renthal Works O-Ring chain. These chain sprocket kits are all machined to work together, there are special chamfers on the matched Renthal chains and sprockets that deliver the best life. Make sure you replace chains and sprockets as a kit, and always lube them hot, right after your ride, so that the lube penetrates best and the cools off and "sets up" on your chains and sprockets. This will keep your lube from flying off when you ride, as happens when you lube the chain cold, right before you ride. If you did not remeber to lube after your last ride, no worries. Take the bike for a 10 minute ride to warm up the chain-sprockets, bring it back, lube it well, and then let it sit for 15 minutes or so.
Q: Front sprocket?
Over 8 years ago
does this kit come with one because it should.
Over 8 years ago
A: Yes, once you have specified your bike, you then have to specify the front and rear sprocket teeth quantity just before you add to cart.
MotoSport Staff
Over 8 years ago
A: yes the Renthal Twinring sprocket kit will come with a countershaft sprocket.
Q: Can you buy a new steel outer sproket ring when it wears out?
Over 10 years ago
Over 10 years ago
A: No you can't replace the outer ring when it wears out. Will last 5x longer then a aluminum sprocket.
MotoSport Staff Expert
Over 10 years ago
A: unfortunately you must replace the whole sprocket once it wears out.
Over 10 years ago
A: No, the inner and outter rings are machined together. No manufacturers offer a replacable outter ring.
Over 10 years ago
A: I think you are asking about the actual steel teeth on the rear sprocket. If so, I don't think it is sold separately. You can purchase the rear sprocket assembly separately without having to buy it in a kit that would include the chain and front sprocket. Hope this helps.
See all bikes that this part fits...
See Fitments
# Part Numbers
Product Variant Manufacturer Part #
Natural / 120 Links 520 x 120
Natural / 120 Links N/A
Gold / 120 Links 520ERV3 G&G X 120
Natural / 120 Links 520NZ x 120
Gold / 120 Links N/A
Natural / 120 Links 520VX2X120
Gold/Black / 120 Links 520VX2G120
Gold / 120 Links C128
Natural / 120 Links SS520HDN-120
Gold / 120 Links SS520XTG-120
Gold / 120 Links C416
Natural / 120 Links SS520SSR-120
Gold/Gold / 120 Links 520ERT3 G&G X 120
Gold / 120 Links SS520MXR1-120
Front Sprocket
Product Variant Manufacturer Part #
520 / 14T 447--520-14GP
520 / 13T 438--520-13GP
520 / 14T 496U-520-14GP
520 / 12T 255--520-12GP
520 / 14T 255--520-14GP
520 / 14T 283--520-14GP
520 / 14T 279--520-14GP
520 / 14T 253--520-14GP
520 / 12T 439--520-12GP
520 / 13T 256--520-13GP
520 / 13T 253--520-1
520 / 12T 256--520-12GP
520 / 16T 279--520-16GP
520 / 15T 279--520-15GP
520 / 12T 257--520-12GP
520 / 14T 492--520-14GP
520 / 12T 289--520-12GP
520 / 14T 254--520-14GP
520 / 13T 439--520-13GP
520 / 15T 283--520-15GP
520 / 14T 439--520-14GP
520 / 13T 292--520-13GP
520 / 13T 254--520-13GP
520 / 14T 292--520-14GP
520 / 13T 255--520-13GP
520 / 15T 292--520-15GP
520 / 14T 438--520-14GP
520 / 12T 337--520-12GP
520 / 13T 486-520-13GP
520 / 13T 337--520-13GP
520 / 13T 447--520-13GP
520 / 12T 252--520-12GP
520 / 15T 447--520-15GP
520 / 14T 289--520-14GP
520 / 13T 257--520-13GP
520 / 13T 252--520-13GP
520 / 13T 289--520-13GP
520 / 15T 255--520-15GP
520 / 15T 289--520-15GP
520 / 13T 453--520-13GP
520 / 14T 252--520-14GP
520 / 14T 453--520-14GP
520 / 13T 492--520-13GP
520 / 13T 452--520-13P
520 / 14T 452--520-14GP
520 / 12T 254--520-12GP
520 / 12T 453--520-12P
520 / 15T 253--520-15GP
520 / 15T 252--520-15GP
520 / 13T 497--520-13GP
Rear Sprocket
Product Variant Manufacturer Part #
Black / 50T 1230-520-50GPBK
Black / 51T 1120-520-51GPBK
Black / 52T 2240-520-52GPBK
Silver / 47T 1540-520-47GPSI
Green / 51T 1120-520-51GPGN
Blue / 49T 1500-520-49GPBU
Red / 51T 1540-52051GPRD
Silver / 48T 1120-520-48GPSI
Silver / 52T 2240-520-52GPSI
Silver / 51T 2240-520-51GPSI
Silver / 50T 2240-520-50GPSI
Silver / 49T 2240-520-49GPSI
Silver / 48T 2240-520-48GPSI
Black / 50T 1500-520-50GPBK
Red / 49T 1540-52049GPRD
Silver / 49T 1120-520-49GPSI
Orange / 50T 2240-520-50GPOR
Silver / 50T 1120-520-50GPSI
Green / 49T 1120-520-49GPGN
Silver / 51T 1120-520-51GPSI
Silver / 49T 1540-520-49GPSI
Silver / 52T 1120-520-52GPSI
Silver / 52T 1540-520-52GPSI
Silver / 48T 1230-520-48GPSI
Black / 50T 1120-520-50GPBK
Silver / 49T 1230-520-4
Black / 49T 1230-520-49GPBK
Silver / 50T 1230-520-50GPSI
Black / 49T 1500-520-49GPBK
Silver / 51T 1230-520-51GPSI
Red / 48T 1540-52048GPRD
Silver / 49T 1500-520-49GPSI
Red / 50T 1540-52050GPRD
Silver / 50T 1500-520-50GPSI
Orange / 48T 2240-520-48GPOR
Silver / 47T 1500-520-47GPSI
Orange / 52T 2240-520-52GPOR
Silver / 48T 1500-520-48GPSI
Blue / 50T 1500-520-50GPBU
Silver / 51T 1500-520-51GPSI
Green / 50T 1120-520-50GPGN
Silver / 52T 1500-520-52GPSI
Silver / 50T 1540-520-50GPSI
Black / 49T 1540-520-49GPBK
Silver / 48T 1540-520-48GPSI
Black / 48T 2240-520-48GPBK
Black / 50T 2240-520-50GPBK
Silver / 51T 1540-520-51GPSI