empty
Renthal Front Sprocket
Renthal Front Sprocket

$11.77 - $46.79
10% Off - Save up to $5.20

Select your bike to see if this sprocket fits
Item #REN001J

Read More
41 Reviews
5 out of 5 stars
5 Star   39 4 Star   2 3 Star   0 2 Star   0 1 Star   0
Write a Review

Write your review and you'll automatically be entered in our monthly drawing. Include an image or video to DOUBLE your chances to win!

Write Your Review Write a review to win $500
All Reviews
Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5

Top 1000 Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5
The best

Great product as good or better then oem

MotoSport Staff Verified Purchaser Expert
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 3/5
Messing with gearing

Great replacement. Good quality product.. Renthal is all I run typically.

Ltz 400

I'm not sure if I want to stay with my stock gearing or change my gearing to a 13t/40t. Can I change the front sprocket only to see if I like it or do I need to change the front, rear sprocket and chain if I'm only experimenting?

Sidney, MT 59270, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5
Perfect Sprocket.

These were perfect! They installed easily and worked awesome. Highly Reccomended

Verified Purchaser
Pineville, LA, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5
Renthal sprocket

Renthal products are all top quality. I always use their sprocket, bars and grips!!

Verified Purchaser
Oxnard, CA, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5
MotoSports is Great

Great service, great product

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

Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5
Great Product!

This is a great product! I have ordered from MOTO sport befor e and will order more parts in the future as need arises!

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

See 10 More Reviews
10 Questions
Answered:   9
Not Yet:   1
Tyrone
Q: I'm not sure if I want to keep my stock gearing or change my gearing to a 13t/40t. Can I change the front sprocket only or do I have to change both?
3 months 14 days ago
David
Top 10 Contributor
3 months 14 days ago
A: You can just change the front.
Kdog
Q: Do i have to get a different chain length if so what length?
1 year 1 month ago
I have a 2004 polarisepredator 500 and wanted to get more low end power so i figured i would get a 15t sprocket and a new chain. I was wondering if i had to get a differmt length of chain?
Drobneck
Q: Does it come with the new guard?
1 year 9 months ago
Does the part come with the that " C" guard.
MotoSportExpert
Expert MotoSport Staff
1 year 9 months ago
A: No. The Renthal Front Sprocket does not come with the guard. Feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Rodney
Q: Which way does the Renthal 520 off road sprocket go on 2008 Suzuki rmz 250?
1 year 11 months ago
There are numbers on one side. I have the numbers and lettering facing engine. I tried to use old sprocket as a guide but that sprocket is the same on both sides. Any help is appreciated. Renthal 520 Off-Road Front Countershaft Sprocket Color- Steel, Size- 13
MotoSportExpert
Expert MotoSport Staff
1 year 11 months ago
A: The sprocket should be the same on both sides meaning you could run it either way.

http://www.renthal.com/shop/about-us/contact-us

Renthal
Telephone (Toll Free): (877) 736-8425
Kxrider
Q: Which way is the sprocket supposed to face on a kx85 the words out or in
2 years 9 months ago
MotoSportExpert
Expert MotoSport Staff
2 years 9 months ago
A: Generally the writing/numbers will face out. If the sprocket has different length flanges on each side you want to make sure it goes on the same as the old sprocket or as specified in your service manual.
isiah
Q: What kind of attachment holds the front sprocket on for a 2003 cr85? and does it come with this product?
2 years 10 months ago
MotoSportExpert
MotoSport Staff Expert
2 years 10 months ago
A: On the 2003 Honda CR85 the front sprocket is held to the counter shaft with a fixing plate and two bolts. The Renthal Front Sprocket does Not come with the hardware, however it can be found in our OEM section here:
http://www.motosport.com/dirtbike/oem-parts/honda/2003/cr85/transmission
Chuck
Q: How to reduce torque on a 2011 KTM 50sx
Over 3 years ago
Currently running a 10 tooth front sprocket and 42 tooth rear sprocket. Which one should I change to lower the torque on the bike. Daughter gets jerked when she gets on the gas.
MotoSportExpert
Expert MotoSport Staff
Over 3 years ago
A: For less bottom end power and more top end you would want to go down on the rear sprocket and/or up in the front. Remember 1 tooth in the front is equal to about 3 in the rear. Feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
chestnut250
Over 3 years ago
A: To reduce torque (spread out the gearing) you would want to increase the size of the counter-sprocket (front sprocket connected to engine, sometimes called the drive sprocket) or decrease the rear sprocket (Large sprocket attached to wheel hub, sometimes called the driven sprocket). Keep in mind the bike will accelerate slightly slower but will also have a higher top speed. Another thing to consider is you may want to stick to changes on the sprocket, not counter-sprocket. Counter-sprocket changes are BIG changes and you can get much more gradual changes with the driven sprocket.

Something else you may want to check before changing gearing is the chain tension. You say the bike jerks when she gets on the gas, that is usually a sign of a loose or stretched chain. Be sure to adjust this to the manufacturer recommendation with is usually about 1" to 1 1/4" of free play.
Trailrider
Q: Would changing the sprocket size on a 07 ktm105sx help with trail riding?
Over 3 years ago
We trail ride the most and I know a trail bike would be better overall however we like the weight and size of the 105. Would changing the sprocket size set the bike up better for trail riding? Any recommendations on a good ratio or size for front and rear. I believe the stock size is 14 in the front and 49 in the back.
MotoSportExpert
Expert MotoSport Staff
Over 3 years ago
A: Yes you can definitely gear your 2007 KTM105SX to work better on the trails. Going up on the rear and/or down on the front will give you more bottom end. I would recommend searching the forums to find out what gearing is working best for trails on the 105SX.
atv449
Q: Best setup for mx front and rear sprocket
Over 3 years ago
running stock right now
MotoSportExpert
Top 1 Contributor
Over 3 years ago
A: Motosport.com only list the stock gearing for your Yamaha YFZ450.

As a general rule of thumb to get more acceleration (less top speed), you will want to either drop teeth in the front or add to the rear sprocket.

To increase top speed, you do the opposite.
Ryguy
Q: If I have a 13 on my bike and a 53 on the back if I do 12 in front and 52 on back will I have more touque and more top end at the same time?
Over 3 years ago
chestnut250
Over 3 years ago
A: No.

It is impossible to get both more torque AND more top end with sprocket changes. The only way to accomplish this is to change the bikes transmission gearing (1st gear ratio, 2nd gear ratio, and so on) and even with this you could only accomplish more torque on the bottom and more top end in the higher gears.

It is a give and take. With sprockets if you want more torque you sacrifice top end. If you want more top end you sacrifice torque.

I hope this helps.
MotoSportGrantK
MotoSport Staff
Over 3 years ago
A: You can either gain acceleration or top speed, not both. 13-53 gives you a gear ratio of 4.08, going with 12-52 will give you a gear ratio of 4.33 giving you more slightly more acceleration and less top speed. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
Fitment
See all bikes that this part fits...
See Fitments
# Part Numbers
Product Variant Manufacturer Part #
520 / 13T N/A
520 / 15T 253--520-15GP
520 / 14T 254--520-14GP
520 / 15T 255--520-15GP
520 / 14T 282--520-14GP
520 / 15T 282--520-15GP
520 / 14T 283--520-14GP
520 / 15T 283--520-15GP
520 / 13T 293--520-13GP
520 / 14T 293--520-14GP
420 / 13T 307--420-13GP
420 / 14T 307--420-14GP
420 / 14T 431--420-14GP
420 / 15T 431--420-15GP
428 / 13T 431--428-13GP
428 / 14T 431--428-14GP
520 / 13T 432--520-13P
520 / 14T 468--520-14GP
520 / 12T 479--520-12GP
428 / 14T 482--428-14GP
415 / 10T 481--415-10P
415 / 11T 481--415-11P
520 / 14T 279--520-14GP
520 / 15T 279--520-15GP
520 / 16T 279--520-16GP
520 / 13T 302--520-1
520 / 14T 302--520-14GP
520 / 15T 302--520-15GP
520 / 13T 308--520-13GP
520 / 14T 308--520-14GP
520 / 13T 365--520-13GP
520 / 14T 365--520-14GP
520 / 13T 366--520-13GP
520 / 14T 366--520-14GP
520 / 14T 432--520-14GP
520 / 15T 432--520-15GP
520 / 13T 450--520-13P
520 / 14T 450--520-14GP
520 / 15T 450--520-15GP
520 / 13T 454--520-13GP
520 / 14T 454--520-14GP
520 / 15T 454--520-15GP
520 / 12T 256--520-12GP
520 / 13T 256--520-13GP
520 / 13T 253--520-1
520 / 14T 253--520-14GP
420 / 14T 259--420-14GP
428 / 13T 258--428-1
420 / 15T 259--420-15GP
420 / 14T 461--420-14GP
420 / 15T 461--420-15GP
520 / 12T 439--520-12GP
520 / 13T 439--520-13GP
520 / 14T 439--520-14GP
520 / 13T 368-520-13P
520 / 14T 368-520-14P
520 / 13T 292--520-13GP
520 / 14T 292--520-14GP
520 / 15T 292--520-15GP
520 / 12T 337--520-12GP
520 / 13T 337--520-13GP
520 / 12T 252--520-12GP
420 / 12T 258--420-12GP
420 / 13T 258--420-13GP
420 / 14T 258--420-14GP
520 / 12T 453--520-12P
520 / 13T 453--520-13GP
520 / 14T 453--520-14GP
520 / 13T 452--520-13P
520 / 14T 452--520-14GP
520 / 12T 254--520-12GP
520 / 13T 254--520-13GP
520 / 12T 255--520-12GP
520 / 13T 255--520-13GP
520 / 14T 255--520-14GP
520 / 14T 438--520-14GP
520 / 13T 438--520-13GP
520 / 12T 486-520-12GP
520 / 13T 486-520-13GP
520 / 14T 496U-520-14GP
520 / 13T 447--520-13GP
520 / 14T 447--520-14GP
520 / 15T 447--520-15GP
520 / 12T 257--520-12GP
520 / 13T 257--520-13GP
520 / 12T 289--520-12GP
520 / 13T 289--520-13GP
428 / 14T 258--428-1
520 / 14T 289--520-14GP
520 / 15T 289--520-15GP
520 / 13T 252--520-13GP
520 / 14T 252--520-14GP
520 / 15T 252--520-15GP
520 / 13T 492--520-13GP
520 / 14T 492--520-14GP
428 / 13T 257--428-1
428 / 14T 257--428-1
530 / 16T 289U-530-16P
530 / 16T 289U-530-16P
530 / 16T 309U-530-16P
530 / 17T N/A
525 / 16T 289U-525-16P
525 / 15T 400--525-1
525 / 16T 400--525-1
525 / 15T 285U-525-15P
525 / 14T 344--525-14P
525 / 15T 344--525-15P
525 / 14T 433--525-14P
525 / 15T 433--525-15P
520 / 15T 309U-520-1
520 / 16T 309U-520-1
520 / 15T 321U-520-15P
520 / 16T 385U-520-16P
520 / 17T N/A
520 / 15T 287--520-15P
520 / 16T 287--520-16P
520 / 14T 344--520-14P
520 / 15T 344--520-15P
520 / 16T 321U-520-1
Report an Error