Wiseco - Top End Kit

Wiseco Top End Kit

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$98.99 - $297.99 You save up to $36.80 (11%)

Rating 4.76 of 5 (19 Reviews)
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Product Information

Wiseco Top End Kit
  • Wiseco-forged high-silicon aluminum alloy pistons are computer-machined to exacting tolerances
  • Designed for greater strength with reduced weight and improved heat transfer
  • Piston kits come complete with hi-performance forged pistons (enough for one engine), rings, wrist pins, circlips and full top end gasket kit
  • Replacement pistons include rings and circlips
  • Made in the U.S.A.
**Notes:
  • Cylinder sleeving or replating may be required for oversizes
  • 02-06 Suzuki RM85 models must use stock thrust washers
  • 2004 CR125 Includes GP style piston. GP style pistons have a Hard Coat Anodized finish for improved wear characteristics

    **Closeouts are limited to stock on hand**
  • Item # 12678

FitmentView All

Honda Models

  • ATC250R: 1986
  • CR125R: 1992 - 2007
  • CR250R: 1992 - 2004
  • CR85R: 2003 - 2007
  • CR85R Expert: 2004
  • CRF150R: 2007 - 2009, 2012 - 2013
  • CRF150R Expert: 2007 - 2009, 2012
  • CRF250R: 2004 - 2007
  • CRF250X: 2004 - 2009, 2012 - 2013
  • CRF80F: 2004 - 2009, 2012 - 2013
  • FourTrax Rancher 350 4x4: 2000 - 2006
  • FourTrax Rancher 350 4x4 ES: 2000 - 2006
  • FourTrax Rancher 350 ES: 2000 - 2006
  • FourTrax Rancher 350 S: 2000 - 2006
  • TRX250EX: 2001 - 2008
  • TRX250R: 1986
  • TRX300: 1988 - 2000
  • TRX300EX: 1993 - 2009
  • TRX300X: 2009
  • TRX450R: 2004 - 2009, 2012 - 2013
  • TRX450R (Electric Start): 2009, 2014
  • XR100R: 1995
  • XR200R: 1994, 2000, 2002
  • XR80R: 1993 - 2003

Kawasaki Models

  • KFX400: 2003 - 2006
  • KFX450R: 2009 - 2011, 2014
  • KLX400S: 2003
  • KX100: 1995 - 2009, 2011 - 2013
  • KX125: 2001 - 2002
  • KX250: 1993 - 2001
  • KX250F: 2004 - 2006, 2011 - 2014
  • KX60: 1986 - 2003
  • KX65: 2000 - 2009, 2011 - 2014
  • KX80: 1991 - 2000
  • KX80 Big Wheel: 1994
  • KX85: 2001 - 2013

Suzuki Models

  • DR-Z400: 2000 - 2004, 2007
  • DR-Z400E: 2000 - 2007
  • DR-Z400S: 2000 - 2009, 2011 - 2013
  • DR-Z400SM: 2005 - 2009, 2013
  • QuadRacer R450: 2006 - 2009
  • QuadSport Z400: 2003 - 2009
  • RM100: 2003 - 2004
  • RM125: 1991 - 2007
  • RM250: 1992 - 1995, 2003 - 2006
  • RM65: 2003 - 2005
  • RM85: 2002 - 2009, 2012
  • RMX250: 1993 - 1998
  • RM-Z250: 2004 - 2006
  • RM-Z450: 2008 - 2012

Yamaha Models

  • Banshee 350: 1987 - 2006
  • Big Bear 350 4x4: 1989 - 1999
  • Big Bear 400: 2000 - 2006
  • Big Bear 400 4x4: 2000 - 2006
  • Blaster 200: 1988 - 2006
  • Grizzly 350 Auto 4x4: 2014
  • Grizzly 660 4x4: 2002 - 2008
  • Kodiak 400: 1993 - 1999
  • PW50: 1986 - 1987, 1990 - 2006
  • Raptor 350: 2005 - 2011
  • Raptor 660R: 2001 - 2005
  • Raptor 700R: 2006 - 2009, 2011, 2014
  • Raptor 700R SE: 2014
  • Rhino 660 4x4: 2005 - 2007
  • Warrior 350: 1987 - 2004
  • WR250F: 2005 - 2009, 2011
  • WR250Z: 1995 - 1997
  • YFZ450: 2004 - 2005
  • YZ125: 1998 - 2004
  • YZ250: 1995 - 1998, 2001 - 2012, 2014
  • YZ250F: 2005 - 2007
  • YZ80: 1993 - 2001

Product Reviews Showing 15 of 19 Reviews

Overall Rating: 4.76 of 5

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

Fit

Quality

Installation

Recommend

Quality and Performance Enhancing

Wiseco makes the best parts, enough said. If you need it in a hurry, add the extra for fast shipping, it can cost you a race if you don't have an extra bike. Call customer service and see if it is in stock, if not, ask them when it will be and place your order accordingly, it takes extra time for the shipment to go through the warehouse.

Robert - January 11, 2010

(Ruther Glen, VA)

Fit

Quality

Installation

Recommend

Would buy again.

Great price and super fast delivery. Delivered exactly when they said.

Shawn - April 29, 2010

(Harrisburg, SD)

Fit

Quality

Installation

Recommend

Wiseco - 2-Stroke Top End Kit

Great product! Nice performance after install and it was easy... Hardest part was getting the bike ready and clear to work.

Tony - July 14, 2010

(Parrish, FL)

Fit

Quality

Installation

Recommend

Wiseco piston

Excellent product. Worked great and you can really tell a difference between this and stock. I will definitely buy again. Highly recommended.

Nic - July 20, 2010

(Delano, MN)

Fit

Quality

Installation

Recommend

AWESOME!!!

I got this kit and wasn't sure if I was making the right decision or not. All I can say is if you need to replace your piston get this product. It provided everything I needed to do a complete top end rebuild, gaskets and all! My bike runs better than ever and I am definitely going to buy wiseco products again!

Justin - September 24, 2010

(Manheim, PA)

Fit

Quality

Installation

Recommend

Good to go.

Great kit. This is how it should be. Everything you need, first time. Very straight forward. A monkey could rebuild a top end with this kit. Inexpensive too, which is nice for those of us who have to pay for our rides... I'll definitely go for this again when it's my 250's turn.

Daniel - June 14, 2011

(Lomita, CA)

Fit

Quality

Installation

Recommend

Excellent Kit

Even for an amateur like myself, this kit made the job extremely easy. All gaskets and o-rings were included, and the parts fit like a glove.

Jim - September 27, 2011

(Atlanta, GA)

Fit

Quality

Installation

Recommend

just what I needed.

Complete package for top end rebuild! Highly recommended!

dan - June 22, 2012

(Mountlake terrace, WA)

Fit

Quality

Installation

Recommend

wiseco top end kit

I bought the kit for my 2008 RM 250. piston is a nice piece of machining in a smooth bag, all pieces fit perfectly good explainations and work very well. This is a perfect match between good price and good quality, I will definitely use more of these kits in my bike !

Franck - September 21, 2012

(vaudreuil, QC)

Fit

Quality

Installation

Recommend

Piston works great....

Nice kit. Easy to install and all parts fit well and nicely machined. Waiting to find out how well it holds up with time.

PM - October 10, 2012

(East Granby, CT)

Fit

Quality

Installation

Recommend

Wiseco Rules!

You won't find a better way of freshening up a 2-stroke than a top end kit, and you won't find a better quality kit than this one by Wiseco. The Piston, ring, wrist pin and all seals are top nothch. The price is unbeatable for what comes with this kit!

Brian - January 15, 2013

(Bagdad, AZ)

Fit

Quality

Installation

Recommend

WiseCo TopEnd Kit

I researched for a top end kit and Wiseco always popped up as one of the best and always used, and I agree. Can't go wrong with Wiseco.

Gabriel - June 18, 2013

(Santa Maria, CA)

Fit

Quality

Installation

Recommend

Weisco Top End Kits - CRF250R and 150R

We ride in tight woods and had ~125 hrs on OEM pistons (had a little skirt wear but no cylinder wear). This was my first top end install and needed to do two bikes. Kits were complete and quality seems excellent - great fit and performance. Instructions were OK, but not great - had to do a lot of learning on Web also. Highly recommend these kits, plan to get another kit for each bike in another 150 hrs.

Dave - June 26, 2013

(Genesee, ID)

Fit

Quality

Installation

Recommend

Suzuki RM125 worked perfect

Went together easily, had all the parts needed and really rips now.

Bob - August 12, 2013

(Camp Verde, AZ)

Fit

Quality

Installation

Recommend

Wisconsin top end kits kx65 kx 85

New Wisco top end kits for KX65 and KX85. The fit was great and had no problems at all- the bikes have been running good. My only recommendation is that you have to let the bikes warm up before you wind them out. You might get a little piston slap or nock.

Ed - August 18, 2014

(Methuen, MA)
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