JT Sprockets 520 Front Countershaft Sprocket

Was $11.99 - $23.99 $10.99 - $20.99 You save up to $3.00 (13%)

Rating 4.79 of 5 (71 Reviews)

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Product Information

JT 520 Front Countershaft Sprocket

Made exclusively from the finest grade of C49 high carbon steel, JT Countershaft Sprockets are made to last with a lifespan greater than any other steel or aluminum sprocket. Each sprocket is heat treated and hand finished to exceed OEM standards, so you get the maximum power transferred to the rear wheel.
  • Designed for 520 size OEM replacements or suitable conversions to 520 size chain and sprockets
  • Outlasts any mild steel or surface hardened sprocket as much as two and three times over
  • Item is bike specific, may vary from photo
  • Item # 7787
  • SKU #
  • Mfr. Part #

**Closeouts are limited to stock on hand**

FitmentView All

Honda Models

  • CM250C Custom : 1982
  • CRF230L : 2008–2009
  • Nighthawk 250 : 1991–1996, 1999–2009
  • TLR200 Reflex : 1986–1987
  • XL200R : 1983
  • XL250R : 1986–1987
  • XR200 : 1982–1984
  • XR200R : 1981–1988, 1990–1991, 1993–2002
  • XR250R : 1986–1987

Kawasaki Models

  • ER-6n : 2009–2010
  • EX500 : 1987–1993
  • GPz550 : 1984
  • KL600 : 1985–1986
  • KLR250 : 1986–2005
  • KLR650 : 1987–1989
  • KLX300R : 2003, 2006–2007
  • KLX400 : 2003–2004
  • KLX400R : 2003
  • KLX400S : 2003–2004
  • KLX400SR : 2003
  • KLX450R : 2008–2009
  • KX250 : 1999–2007
  • KX450F : 2006–2017
  • KX450F Monster Energy : 2009
  • Ninja 500R : 1997–2009
  • Ninja 650 : 2012–2014
  • Ninja 650R : 2006–2011
  • Ninja ZX-6 : 1990–2002
  • Ninja ZX-7 : 1990–1995
  • Ninja ZX-7R : 1991–1994, 1996–2003
  • Ninja ZX-7RR : 1996–1997
  • Ninja ZX-9R : 1995–2003
  • Versys : 2010–2012
  • Vulcan 500 LTD : 1996–2009
  • Zephyr 550 : 1990–1993

Suzuki Models

  • DR200 : 1986–1988
  • DR200SE : 1996–2009
  • DR250 : 1990–1993
  • DR250S : 1990–1992
  • DR250SE : 1993–1995
  • DR350 : 1990–1999
  • DR350S : 1990–1993
  • DR350SE : 1994–1999
  • DR-Z250 : 2001–2007
  • DR-Z400 : 2000–2007
  • DR-Z400E : 2000–2007
  • DR-Z400S : 2000–2009, 2011–2013
  • DR-Z400SM : 2005–2009, 2013–2015
  • Gladius : 2009
  • GS500E : 1989–2002
  • GSX-R1000 : 2001–2008
  • GSX-R600 : 2001–2009, 2011–2012
  • GSX-R750 : 2000–2009, 2011–2012
  • Hayabusa : 1999–2007
  • Katana 600 : 1989–2006
  • Katana 750 : 1989–2006
  • Marauder 800 : 1997–2003
  • QuadRacer 250R : 1986–1992
  • RF900R : 1994–1997
  • RM250 : 1986–2008
  • RM250 Carmichael Edition : 2006
  • RMX250 : 1989–1998
  • SP200 : 1986–1988
  • TL1000R : 1998–2003
  • TL1000S : 1997–2001

Yamaha Models

  • DT250 : 1974–1976
  • FZ1 : 2001–2015
  • IT400 : 1976
  • Raptor 660R : 2001–2005
  • TT500 : 1977–1981
  • WR250F : 2001–2009, 2011–2013, 2015
  • WR250R : 2008–2015
  • WR250X : 2008–2011
  • WR400F : 1998–2000
  • WR426F : 2001–2002
  • WR450F : 2003–2009, 2011–2014
  • YFZ450 : 2004–2009
  • YFZ450 Balance : 2006–2007
  • YFZ450 SE : 2007–2008
  • YZ125 : 2005–2015
  • YZ250 : 1999–2014
  • YZ250F : 2001–2017
  • YZ250F Anniv. : 2006, 2016
  • YZ250FX : 2015
  • YZ400F : 1998–1999
  • YZ426F : 2000–2002
  • YZ450F : 2003–2017
  • YZ450F Anniv. : 2006, 2016
  • YZF600R : 1995–2006
  • YZF-R1 : 1998–2006, 2008, 2012
  • YZF-R1 LE : 2006, 2010

Product Reviews 1 - 15 of 71

Overall Rating: 4.79 of 5

(71 Reviews)
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What Other Riders Are Saying...

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just what i needed

part fit like original. great quality and fast shipping.love shopping this store.

ken h - May 31, 2017

(elkhart, IN)

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I'm Happy!

I have a 2016 Pitster Pro LXR 250F which is basically a Chinese knockoff of KTM. The price of the bike is 'nice' but finding aftermarket parts is next to impossible. After much research, I was able to find out that JT Sprockets makes a front sprocket, part #JTF432 which has 12-16t available. I ordered the 15t and it arrived in the mail today and thankfully it's a perfect fit. Incredibly, it's lighter than the 13t stock sprocket with the holes in it as well as having a self-cleaning grooves. I've been ordering a lot of products from Motorcycle-Superstore and the service as well as the quality of the products has been great.

Michael Hafke - January 31, 2017

(High Bridge, NJ)

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great change for my Yamaha 250

I swapped out the OEM sprockets for these (larger front and smaller rear). Big change in performance. Feels much nicer running through the gears), The parts looked just like the OEM and the swap was only minorly complicated (had to get the rear wheel off the ground without a center-stand). Great quality and great price.

JPHansen - January 26, 2017

(SLC, UT)

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Quick shipping

Sprocket was a little different than OEM (OEM has a rubber damper and replacement didn't). I noticed in the Mfg.'s microfiche that it's been superseded by a new part #, so maybe it's the same one as I received. No biggie as far as I'm concerned. Shipping was quick. I'm quite satisfied.

Don Edgerton - November 7, 2016

(Mexico, NY)

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jt sprockets

great

maxx - November 4, 2016

(west tn, TN)

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No problems

Happy with the results. Exact replacement for OEM.

Dave - September 28, 2016

(Conyers, GA)

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Basic Replacement to OEM Standards

Your general replacement front sprocket. No notable advantages or disadvantages over stock. Good value/price point.

Alexander - September 16, 2016

(Richmond, VA)

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DRZ400SM

Figured I'd buy another front sprocket and as always; I get JT sprockets. Might as well order a new front one if I'm getting a chain and rear sprocket. Highly recommend.

Andrew - May 11, 2016

(Appleton, WI)

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08 Ninja 250r

Went from the stock 14t to a 15t. Dropped the rpms down by about 1000k. I've already put about 700miles on it and love the upgrade. Solid single piece design, only wish I would have swapped it out sooner!

Cory - April 16, 2016

(Gravois Mills, MO)

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15T front sprocket change on my 2007 Ninja 250

Came nicely packaged. Really nice install and fitment. I paired this with a 42T rear sprocket and got nearly a 1,000 RPM drop in 6th. Hills may require a downshift now, but the engine handles the highway speeds much better without feeling like its going to explode. Same manufacture as the OE sprocket on my bike, so I would assume it will last quite a while as long as you maintain your chain every 300 miles.

Paul - October 31, 2015

(Euharlee, GA)

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The right part

Exactly as described. Fit perfectly on 2014 Yamaha V Star 250.

David N - October 1, 2015

(Sonoma, CA)

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Sprocket

Old Dude, Old Bike: 1986 Honda XR 200, perfect solution for street legal riding. Easy install and exceeded expected results. Have owned and raced or ridden over 30 bikes, and am a loyal repeat consumer to Motorcycle-Superstore- on time delivery, priced right, what more can I say. Thanks.

Glen - July 7, 2015

(Austin, TX)

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Great Part

This sprocket was ordered to mesh with a new rear sprocket on a friend's bike. The fit was perfect and he was riding the bike in less than an hour.

James - July 7, 2015

(Brunswick, GA)

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Perfect as expected

This part was replaced to match the J.T. rear sprocket. It is of high quality and is machined for a perfect fit. I am very pleased with my new rear ratio.

Jamesw - July 2, 2015

(Brunswick, GA)

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worth the $$$

Went through 2 chains and it still looked good but replaced it anyways.

Dean - May 12, 2015

(tracy, CA)