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Sunstar Chain & Steel Sprocket Combo

$68.97 - $294.57
$51.99 - $224.99
4.80 out of 5 stars

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Sunstar Chain & Steel Sprocket Combo
Sunstar Chain & Steel Sprocket Combo
  • Description
  • Reviews (27)
  • Q&A (12)
  • Fitment

The MotoSport.com Sunstar Chain & Steel Sprocket Kit includes ONE Steel Countershaft (Front) Sprocket, ONE Steel Rear Sprocket, and your choice of ONE Premium 420 Drive Chain, each with the following features:

Sprockets / Chainwheels Included:

Sunstar is the largest O.E.M. supplier of sprockets and brake rotors in the world. In fact, your motorcycle probably came from the factory with a Sunstar sprocket. Need a reason to choose Sunstar? Every Sunstar product is imbued with superior quality, uses an exclusive heat-treatment and quenching process, is based on advanced research and design, and is sold at an added value price.

Sunstar Front Sprocket 420:

  • Manufactured from case-hardened chromoly steel for the ultimate in strength and durability.
  • "Parkerizing" surface treatment for rust and corrosion resistance.

Sunstar Steel Rear Sprocket 420:

  • Manufactured using only the highest quality 1045 high-carbon steel.
  • Exclusive heat treatment for added strength and wear resistance.
  • Most are zinc plated and have a baked-on durable paint process for corrosion resistance.
  • The strongest, longest lasting steel replacement sprocket available.

Your Choice of Drive Chain:

D.I.D 420 Standard Chain - 120 or 126 Links:

The D.I.D Standard Non-O-Ring Chain is designed for low horsepower, smaller displacement mopeds, scooters and vintage motorcycles.

  • For machines originally equipped with non-O-ring chains.
  • Solid rollers.
  • Shot-peened parts.
  • High cylindrical and roundness accuracy.
  • Exacting tolerances provide low friction.
  • Pre-stretched.
  • Special alloy steel with extended riveted bushing "anti-kink" design.
  • Highest quality non-O-ring chain in overall combined performance.
  • Average tensile strength of 4,200 pounds.
  • Wear life index: 100.
  • Includes clip-style master link.
  • 120 or 126 links.
  • Note: Non-sealed chains require more regular maintenance than sealed (O-ring, X-ring) versions and are mainly recommended for off-road use.

D.I.D 420 NZ3 Gold Chain - 120 or 126 Links:

Pinning your bike out of every turn might tear apart the stock chain, but D.I.D and their 420NZ3 Gold chain will not let you, or your race for first, down.

  • For machines originally equipped with non-O-ring chains.
  • Solid rollers.
  • Shot-peened parts.
  • High cylindrical and roundness accuracy.
  • Exacting tolerances provide low friction.
  • DHA pin treatment - hard chromium-carbide layer formed on pin surface for exceptional strength and wear resistance.
  • Pre-stretched.
  • Special alloy steel with extended riveted bushing "anti-kink" design.
  • Highest quality non-O-ring chain in overall combined performance.
  • Up to 19% higher tensile strength; average tensile strength of 4,780 pounds.
  • Wear life index: 410.
  • Weight (per 100 links): 1.81 pounds.
  • Includes a clip-style master link.
  • 120 or 126 links.
  • Note: Non-sealed chains require more regular maintenance than sealed (O-ring, X-ring) versions and are mainly recommended for off-road use.

Renthal 420 R1 Chain - 120 or 130 Links:

Renthal's R1 Works Chain is a high-strength non O-ring chain with excellent impact load resistance designed specifically to withstand the stress found in off-road applications. This chain is the choice where a combination of high strength, light weight and maximum power transfer are important considerations.

  • Shot-peened alloy steel side plates for high tensile strength and maximum impact load resistance.
  • Chamfered inner links to reduce the chance of chain derailment.
  • Extended bushings to reduce friction between outer and inner link plates, maximizing power output.
  • Chromized bearing pins for excellent resistance to wear.
  • Gold color side plates help prevent corrosion.
  • Most perfectly matched chain for Renthal sprockets allowing maximum power at the rear wheel. This also extends the life of both the chain and sprockets.
  • Average tensile strength of 4,271 pounds.
  • Wear life index: 300.
  • Maximum displacement (street / off-road): N/A / 150cc.
  • Weight (per 100 links): 1.76 pounds.
  • Each chain includes master link and a pair of latex gloves for mess free installation.
  • 120 or 130 links.
  • Note: Non-sealed chains require more regular maintenance than sealed (O-ring, X-ring) versions and are mainly recommended for off-road use.

Sunstar 420 MXR1 Works MX Racing Chain - 126 Links:

Sunstar's MXR1 Works MX / SX / Off-Road race chain (MXR = Motocross Xtreme Racing) is a premium quality, highly durable non-sealed chain specifically designed for Motocross, Supercross and/or off-road racing. Featuring Sunstar's oversized TripleStar treated ultra hard pins and 100% heat treated components, the MXR1 chain is constructed to handle the demands of the highest levels of racing. This is also one of the lightest MX chains on the market thanks to its superlight design - the 520MXR1 120 link version weighs less than 3.6 pounds, yet is super strong with an 8,970-pound tensile strength rating. Its combination of strength, durability and light weight make it the top choice for serious racers.

  • Deep gold side plates and gold inner plates.
  • Super strong and lightweight design for high performance / racing mini off-road and motocross machines.
  • Utilizes TST (TripleStar Treated) ultra-hard pins and 100% heat treated components for high strength and durability.
  • Seamless rollers and bushings help provide the added life and durability.
  • Average tensile strength of 4,970 pounds.
  • Maximum rated displacement (street / off-road): 150cc / 150cc.
  • Weight (per 100 links): 1.76 pounds.
  • Includes clip-style master link.
  • 126 links.
  • Note: Non-sealed chains require more regular maintenance than sealed (O-ring, X-ring) versions and are mainly recommended for off-road use.

Note: Image is for reference ONLY, actual product will vary based on fitment and selection.

4.8 out of 5 stars (27)
4.8 out of 5 stars
5 star   22
4 star   5
3 star 0
2 star 0
1 star 0
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1-10 of 27
Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Style
Top 1000 Contributor Verified Purchaser
Location: Louisiana, USA
Blaino517
Great combo

gave 4 stars on style because it would be nice to have a different color on the back sprocket, other than that its a great combo and the sunstar sprockets have always done well with durability on any bike!

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Style
Verified Purchaser
Mike
Quality chain/sprockets

Great quality, I've used them in the past over the years and not been disappointed. This is the first time for this chain, just installed so will wait on a true durability assessment.

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Style
Verified Purchaser
Location: Minnesota
motoblock123
Sun start

This kit is easy to install and thete is nothing to complain about other than its not the coolest looking sprocket. But just because its not the coolest doesn't mean ot cant make you go fadt

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Style
Verified Purchaser
Location: Houston, TX, USA
RyneC
Sunstar Sprockets w/ Renthal R1 Gold

Great combo of chain and sprockets. The steel lasts a lot longer than the aluminum and the renthal gold chain is the perfect pick to hold up with everything else! And it obviously looks good.

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Style
Top 1000 Contributor Verified Purchaser
MotoDave

It is well made and fits nicely on my bike.

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Style
Verified Purchaser
Location: Mn
cjzc
Sunstar Chain & Steel Sprocket Combo

If you do not care about weight and want reliability, this is the best set up for a 450!! They can last me a full season with a O-Ring chain.

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Style
Verified Purchaser
Location: Kalkaska, MI
Johnny
Steel combo

The chain stretched very little after first ride which was 60 miles of single track. Not typical of lower end chains.

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Style
Verified Purchaser
Location: North central Montana
Jedi
Good product

I installed this chain and sprocket kit on my klr 650. I have only rode it about 100 miles since so i cannot say for durability. I went with a 16 tooth front and a 44 rear i think. Dropped my rpm at 70 mph to 4300 when before with 15 tooth front and 45 tooth rear i was pushing 5500 rpm. Just like getting 6th gear... I was surprised to find that it did not really move first gear much.... can still start out in soft sand good.

Overall 5 out of 5 stars
Durability
Ease of Installation
Performance
Style
Verified Purchaser
Lash
Sun Star Chain and sprocket

Direct replacement with no issues, this is my 3 sun star chain and sprocket on three different bikes. All are great priced

Overall 4 out of 5 stars
Durability
Ease of Installation
Performance
Style
Verified Purchaser
Location: Candor, NY 13743, USA
Dirtpoor
For the price you cant beat it

Sprockets are great, defiantly out last the chain. Chain I would rate as a fair plus. Again, for the price you cant beat it.

1-10 of 27
Total Questions (12)
Questions with answers:
  12
Questions without answers:
0
1-10 of 12
anthonyw13 1 month 6 days ago
What chain will last longest?
MotoSport Staff Expert
1 month 5 days ago
MotoSportExpert
Chain life will really depend on multiple factors, maintenance (how clean and oiled you keep your chain), riding conditions, bike, ect. I personally run the DID ERT2 chain and get a lot of life out of it. Its also a very strong chain.
Dominique 1 month 12 days ago Location: Meridian, MS, USA
I have a Honda TRX90, would having larger than stock sprockets increase speed over hard surfaces?
The sprockets and chain need replaced, the chain keeps derailing at low speeds.
Expert MotoSport Staff
1 month 11 days ago
MotoSportExpert
For more top end speed you would want to go down on the back and/or up on the front. For bottom end you would go up on the back sprocket and/or down on the front. Feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
kbe50 2 months 19 days ago
On the top of page it says pitch of 428 for xr100?
is that the same as Premium 420 Drive chain and Sprocket kit
MotoSport Staff Expert
2 months 18 days ago
MotoSportExpert
The 428 would be the correct size for the XR100, not the 420. 420 and 428 are not the same size. Feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
KenziePotz 4 months 18 days ago Location: Nova Scotia
I have a drz125 2009 and I need a front and rear tire and a front and rear sprocket an chain. What do I need??
Expert MotoSport Staff
4 months 17 days ago
MotoSportExpert
Gearing would depend on what kind of riding you are doing and how the current gearing is working for you now. Stock gearing would be 14/51 and you may want to go up or down from there. Tire choice would also depend on the riding you are doing and the terrain (soft,medium,hard) that you are riding on. Feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Brownboy23 Over 5 months ago Location: Meade County, KY, USA
I got a 2002 Honda xr100. what size chain should I get?
MotoSport Staff Expert
Over 5 months ago
MotoSportExpert
It would depend on what size sprockets you are running. If you are going larger than the stock 14/50 I would suggest going with the 130L. If you are going with stock or smaller gearing the 120L chain should do it.
2smoker Over 6 months ago
I wanna convert my 150f from a 520 to a 428 can you tell me what front and rear sprocket fits?
MotoSport Staff Expert
Over 6 months ago
MotoSportExpert
We do not carry a 428 conversion for your Honda CRF150R. I would try Sprocket Specialist or Sidewinder sprockets.
hondarider14 Over 11 months ago
Crf150rb chain?
i just went through a regular DID chain on my 2012 crf150rb. do u think i should get a o ring chain or a gold chain ?
Expert MotoSport Staff
Over 11 months ago
MotoSportExpert
I recommend the DID 420 NZ3 Chain, it will be a lot stronger than a standard chain and will last longer. Most importantly make sure to keep your chain clean and well-oiled along with proper chain tension to help extend the life of your chain. http://www.motosport.com/dirtbike/DID-420-NZ3-Chain
Over 5 months ago Location: Houston, TX, USA
RyneC
Go gold. I had the sunstar with standard DID and was always constantly adjusting. The gold renthal is a good upgrade.. little bit more money but a lot more life. Don't need o-ring or x-ring unless youre running a like 450. They rob a lot of power and only eliminate the need for adjustment since they don't stretch.
ceestar 1 year ago Location: North Dakota, USA
Does this kit come with the sprocket bolts included?
1 year ago Location: Mn
cjzc
No, it does not. Also remember to locktight the sprocket bolts when replacing the rear sprocket, they like to come loose.
Over 5 months ago Location: Minnesota
motoblock123
No it does not but a bolt kit is less then ten dollars so that should not make you second guess this kit
Alex 1 year 3 months ago
What length chain for a 2001 YZ125?
HI, I have a 2001 YZ125, I am looking to take the gear ratio from stock 13/48 to 13/50. What length of chain do I need to purchase?
MotoSport Staff Expert
1 year 3 months ago Location: Portland, OR, USA
MotoSportRyanT
The stock gearing would require a 112 link chain. You will likely need to go with 114 - 116 links with the larger rear sprocket. All the chain and sprocket kits we sell will come with a 120 link chain that would need to be shortened to the appropriate length.
Over 5 months ago Location: Houston, TX, USA
RyneC
the standard 120 link 520 chain. You will still be cutting off about 3-4 links to make it fit for whichever sprocket sizes youre running.
Laura 1 year 6 months ago Location: Tennessee, USA
How do I know which one to order?
I want to order the Sunstar Chain and Steel Sprocket Combo. I have a 2006 Yamaha TTR 125 LE with 16" back tire and a 19" front tire. I'm confused on which options I should order for these sizes of tires with the front and rear sprockets?. I also am confused about the chain. I know I want either the Renthal or the Sunstar chain, but not sure of the links. Can you help me get the right thing please?
Top 250 Contributor
1 year 6 months ago Location: upstate SC
RyanK
according to the OEM part of this website the front sprocket should be a 13 tooth, the rear sprocket should be 49 tooth, and you need a 122 link chain. http://www.motosport.com/dirtbike/oem-parts/YAMAHA/2006/TTR125LE/REAR-WHEEL http://www.motosport.com/dirtbike/oem-parts/YAMAHA/2006/TTR125LE/TRANSMISSION
MotoSport Staff Expert
1 year 6 months ago Location: Portland, OR, USA
MotoSportRyanT
The original OEM gearing specs for your 2006 Yamaha TTR125LE would be a 13 tooth front sprocket and 49 tooth rear sprocket and would require 122 links in the chain. The larger front sprockets (14/15 tooth) options would give your bike more top speed but would take away from your bikes acceleration off the bottom. The larger 54 tooth option for the rear would give your bike more acceleration but less top speed overall. As far as the chain you would have to choose one of the 130, 134 or 136 link chains and remove the extra links before you put it on the bike, I would recommend getting a chain breaker tool for this job if you don't already have one. Be sure to remember if you change your sprocket sizes to larger sprockets the chain will need to be longer too, it is best to install the sprockets on the bike with the rear wheel adjusted most of the way forward, then lay the chain onto the sprockets to check the correct length.
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