Renthal Twin Ring Sprocket Kit
Renthal Twin Ring Sprocket Kit

$150.39 - $277.69
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Description See Also: 37 Reviews 9 Questions Fitment Part Numbers
Item #REN001Z

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37 Reviews
4.7 out of 5 stars
5 Star   32 4 Star   8 3 Star   1 2 Star   1 1 Star   0
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All Reviews
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.

Top 500 Contributor Verified Purchaser
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

Top 250 Contributor Verified Purchaser
Michigan, USA
Durability 4/5 Ease of Installation 5/5 Performance 5/5 Style 5/5
Excellent based on history with product

We always use Renthal bars and sprockets on our race bikes. We have never had issue with the full aluminum rear sprocket, but switched to the Twin Ring Rear Sprocket this time in an effort to improve on already excellent durability. I anticipate great results with the steel outer ring.

Last 2014 outdoor ride before the cold took over
Top 500 Contributor Verified Purchaser
Kansas City, KS, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5
Outstanding durability

I love Renthal chain wheels. I bought this twin-ring set to increase durability. It replaced their T6 aluminum alloy product that I had run for a couple of seasons. And I can't believe how little wear there is on the all aluminum alloy wheel. Really fantastic. Twin-ring should outlast me.

Verified Purchaser
Nipomo, CA, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5
Renthal Twin Ring Sproket Kit

Nice well made product. Easy to install and performs great. The 2 color design added just the right amount of bling.

Morris, Alabama
Durability 4/5 Performance 4/5 Style 5/5
Very Good Purchase

This is the first time we have used the Renthal Twin Ring. It has lasted through several months of racing, plus practicing. I will purchase another one. Really like this sprocket.

Verified Purchaser
Central Parkway, FL, USA
Durability 4/5 Ease of Installation 4/5 Performance 4/5 Style 4/5
Great sprockets

Front and real sprocket have been great, but the Renthal chain broke in half after 2hrs on it! I will purchase the sprockets again but will not be buying renthal chains! Will stick to DID!

Verified Purchaser
San Diego County, CA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5
Highest Quality, Longest Lasting

I have run Renthal chain & sprocket set ups on dozens of different off-road and road bikes over a 25 year racing, riding, testing and tuning career. At times I spend upwards of 100 days per year riding off road, and I ride a street bike in place of a car most days. I have built a number of race winning and championship wining machines over the years as well.
Firstly, When you replace your chain and sprockets you should always do so as set. This ensures the best longevity and performance from your drivetrain. This is because the chain and sprockets wear together, and by replacing one component, but not the others, this accelerates wear for all the components, both new and old. In the case of these Renthal items, their high tensile strength chains and specialy machined hard anodized sprockets last longer (with proper lubrication and adjustment) than any other set up I have ever used over my very long riding-racing career. I reccomend Renthal full aluminum sprockets and non O-Ring R1 Works Chains for MX and sprint Racing. This is because in MX and sprint Racing these are the lightest, strongest components available, and therefore rob dthe least power from your drivetrain and provide the least possible unsprung wieght . This paticular set, with Renthal Works O- ring chain and Twin Ring Steel Teeth-Hard Anodized Aluminum inner is for a high use off road Endurance Set-up on a YZ450. For offroad and road race Endurance racing, long duration training rides, and all Streetbike applications, the Twin Ring is the way to go because it offers unmatched lightness combined with incredible durabilty and toughness. This YZ450 routinely sees 50 miles of sand, rocks and desert riding per fuel tank, and 100 miles per day is not uncommon. The twin ring set up will last for at least 100 hard run race-practice days and many, many hours. This is the set up I reccomend for recreational riders because the long life saves you a ton of money, and if properly adjusted and lubed will last most riders several seasons and will out last other aluminum chain sprocket combos by several times, all while wieghing a fraction of what other steel set ups wiegh, meaning you are not losing power by using aheavy steel sprocket drive line set up. It is important to note this set will be lubed after the chain and sprockets are warmed with Maxima Clear chain lube which is another important step and good tip. You should get into the habit of lubing your chain at the end of every ride when the chain and sprockets are nice and hot. This allows the lube to penatrate best, and then "set up" as driveline cools.This helps prevents most of your lube from flying off and ending up on your rear wheel, which is what happens when you lube cold right before you ride. Have fun and keep the rubber side down.

Verified Purchaser
Southeast Florida , USA
Durability 4/5 Ease of Installation 5/5 Performance 4/5 Style 5/5
Renthal Twin Ring Sprocket LASTS!!!

Rear sprocket has outlasted the chain and countershaft sprocket

Rear sprocket Survived the wettest enduro I ever raced., x ring chain is toast now.

Florida sand and wet conditions, harescrammbles and enduros

Durability 1/5 Ease of Installation 3/5 Performance 1/5 Style 2/5

The screws that hold the outer part of the sprocket to the inner part of sprocket come loose and fall out. Got about three rides out of this sprocket and noticed that there was only four screws holding it together Would not recommend

Top 1000 Contributor Verified Purchaser
São Paulo, Brazil
Durability 5/5 Ease of Installation 4/5 Performance 5/5 Style 5/5
The awsome sprocket kit

Nice on the Bike!
The visual is perfect!
Undisputed quality!
The price is correct for the quality, explains why most pros use!

Top 1000 Contributor
Michigan, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5
Looked pricey, but is well worth the money!!!

This combo is high quality! Get the Tag replacement bolt kit to go with this set. They have a larger allen key holes and look great. They should be included in this combo. I opted to upgrade to the Renthal 520 R3 O-Ring chain. This set is on my 07 CRF450R with stage 2 cam and High compression piston. I have put about 40 miles of hard trail ridding on it so far with lots of clutch and throtle action. I have not had to adjust my chain tention yet and no sign of wear on th sprockets at all. Remarkable in my book.

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

Got to have the twin ring on a four stroke.

Renthal Twin Ring Sprocket Kit
See 17 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.?
1 year 12 months ago
Expert MotoSport Staff
1 year 12 months ago
A: I personally run the DID ERT2 chain. Very good chain.
Location: tx
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 3 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 3 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 3 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 3 years ago Location: Portland, OR, USA
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.
Location: Dewey, Prescott Valley, AZ 86327, USA
Q: What sprokets should i run on my 09 kx250f?
Over 4 years ago
What if I run a 14 and 50 tooth sprocket set instead of the 13 and 48 tooth set up?
MotoSport Staff
Over 4 years ago Location: Portland, OR, USA
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.
Over 4 years ago Location: San Diego County, CA
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.
Location: Western New York, USA
Q: Sprocket hardware?
Over 4 years ago
Are you able to use the stock hardware (bolts) to fasten the new sprocket to the hub?
MotoSport Staff
Over 4 years ago Location: Portland, OR, USA
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 4 years ago
The bike is completely built. Money isnt an issue.
MotoSport Staff
Over 4 years ago Location: Portland, OR, USA
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 4 years ago Location: San Diego County, CA
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 7 years ago
does this kit come with one because it should.
MotoSport Staff
Over 7 years ago Location: Tualatin
A: yes the Renthal Twinring sprocket kit will come with a countershaft sprocket.
Over 4 years ago Location: Madison, AL, USA
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.
Q: Can you buy a new steel outer sproket ring when it wears out?
Over 9 years ago
MotoSport Staff Expert
Over 9 years ago
A: unfortunately you must replace the whole sprocket once it wears out.
Over 4 years ago Location: Madison, AL, USA
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.
Over 4 years ago Location: San Diego County, CA
A: No, the inner and outter rings are machined together. No manufacturers offer a replacable outter ring.
Over 3 years ago Location: Pleasant hill
A: No you can't replace the outer ring when it wears out. Will last 5x longer then a aluminum sprocket.
1-9 of 9
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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 520ERT2 G&G X 120
Gold / 120 Links N/A
Natural / 120 Links 520VX2X120
Gold / 120 Links C128
Gold / 120 Links SS520XTG-120
Gold/Gold / 120 Links N/A
Gold / 120 Links N/A
Natural / 120 Links SS520HDN-120
Gold/Black / 120 Links 520VX2G120
Natural / 120 Links SS520SSR-120
Gold / 120 Links SS520MXR1-120
Front Sprocket
Product Variant Manufacturer Part #
520 / 15T 447--520-15GP
520 / 13T 447--520-13GP
520 / 13T 486-520-13GP
520 / 13T 438--520-13GP
520 / 14T 283--520-14GP
520 / 14T 279--520-14GP
520 / 15T 289--520-15GP
520 / 12T 439--520-12GP
520 / 14T 253--520-14GP
520 / 13T 253--520-1
520 / 13T 256--520-13GP
520 / 12T 256--520-12GP
520 / 16T 279--520-16GP
520 / 15T 279--520-15GP
520 / 13T 257--520-13GP
520 / 13T 289--520-13GP
520 / 13T 492--520-13GP
520 / 13T 439--520-13GP
520 / 15T 283--520-15GP
520 / 12T 255--520-12GP
520 / 14T 255--520-14GP
520 / 14T 439--520-14GP
520 / 15T 255--520-15GP
520 / 13T 255--520-13GP
520 / 13T 292--520-13GP
520 / 14T 438--520-14GP
520 / 14T 292--520-14GP
520 / 12T 486-520-12GP
520 / 15T 292--520-15GP
520 / 14T 496U-520-14GP
520 / 12T 337--520-12GP
520 / 14T 447--520-14GP
520 / 13T 337--520-13GP
520 / 12T 257--520-12GP
520 / 12T 252--520-12GP
520 / 12T 289--520-12GP
520 / 12T 453--520-12P
520 / 14T 289--520-14GP
520 / 13T 453--520-13GP
520 / 13T 252--520-13GP
520 / 14T 453--520-14GP
520 / 15T 252--520-15GP
520 / 13T 452--520-13P
520 / 14T 492--520-14GP
520 / 14T 452--520-14GP
520 / 14T 254--520-14GP
520 / 12T 254--520-12GP
520 / 13T 254--520-13GP
520 / 14T 252--520-14GP
520 / 15T 253--520-15GP
Rear Sprocket
Product Variant Manufacturer Part #
Black / 49T 1230-520-49GPBK
Black / 49T 1500-520-49GPBK
Silver / 48T 2240-520-48GPSI
Black / 50T 1120-520-50GPBK
Green / 49T 1120-520-49GPGN
Silver / 50T 1540-520-50GPSI
Silver / 49T 1120-520-49GPSI
Orange / 48T 2240-520-48GPOR
Silver / 52T 2240-520-52GPSI
Silver / 48T 1120-520-48GPSI
Silver / 51T 2240-520-51GPSI
Silver / 50T 2240-520-50GPSI
Silver / 49T 2240-520-49GPSI
Red / 48T 1540-52048GPRD
Silver / 50T 1120-520-50GPSI
Red / 50T 1540-52050GPRD
Silver / 51T 1120-520-51GPSI
Orange / 52T 2240-520-52GPOR
Silver / 52T 1120-520-52GPSI
Green / 51T 1120-520-51GPGN
Silver / 48T 1230-520-48GPSI
Silver / 47T 1540-520-47GPSI
Silver / 49T 1230-520-4
Black / 52T 2240-520-52GPBK
Silver / 50T 1230-520-50GPSI
Black / 51T 1120-520-51GPBK
Silver / 51T 1230-520-51GPSI
Black / 50T 1230-520-50GPBK
Silver / 49T 1500-520-49GPSI
Black / 50T 1500-520-50GPBK
Silver / 50T 1500-520-50GPSI
Red / 49T 1540-52049GPRD
Silver / 47T 1500-520-47GPSI
Red / 51T 1540-52051GPRD
Silver / 48T 1500-520-48GPSI
Orange / 50T 2240-520-50GPOR
Silver / 51T 1500-520-51GPSI
Blue / 49T 1500-520-49GPBU
Silver / 52T 1500-520-52GPSI
Green / 50T 1120-520-50GPGN
Black / 49T 1540-520-49GPBK
Silver / 51T 1540-520-51GPSI
Black / 48T 2240-520-48GPBK
Silver / 49T 1540-520-49GPSI
Black / 50T 2240-520-50GPBK
Silver / 48T 1540-520-48GPSI
Silver / 52T 1540-520-52GPSI
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