Wiseco® B1030 - Top End Bearing

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Product Details

Top End Bearing by Wiseco®. Length: 24.8mm. Inner Diameter: 22mm. Outer Diameter: 27mm. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an affordable cost.


Inside Diameter: 22mm
Outside Diameter: 27mm
Length: 24.8mm
Type: KV
Position: Top End


  • Guaranteed workmanship and material quality
  • Peerless quality and superior consistency
  • Will provide seamless service for years
  • Engineered to the highest quality standards
  • Designed to help you get the most out of your vehicle

Wiseco® began the manufacture of pistons 70 years ago when founder Clyde Wiseman started making them in his garage. The pistons he made at that time were destined for use in big bore marine engines, and like so many successful companies that began in people’s garages, word of what he was doing spread and soon he was making pistons for friends and so business began to grow. When Wiseco was officially formed in 1941 it serviced the needs of racers and powersports enthusiasts, and today the powersports sector – predominantly motorcycles and ATVs – now accounts for the largest portion of the work done by the business.

Part Number:

Vehicle Fitment

1100STX 1997-1999
1100ZXi 1996-2003
750SS 1996-1997
750STX 1998
750SXi 1995-1996
750ZXi 1996-1997
JT750 STS 1996-1997
Super Sport XI 1996-1997
SXI Pro 1998-2002
Xi Sport 1998-1999
800 Classic 2004
800 LE 2001
800 PRO X 2003-2004
800 RMK 2002-2003
800 SKS 2003
800 SwitchBack 2004-2005
800 Touring 2004-2005
800 XC SP 2001-2002


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Wiseco® B1030 - Top End Bearing

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