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Namura Standard Bore Piston Kit Size A 66.34mm for Honda CR250R 1997-2001 66.4mm

Namura Standard Bore Piston Kit Size A 66.34mm for Honda CR250R 1997-2001 66.4mm

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Standard Bore Piston Kit Size A for Honda CR250R

This standard bore piston kit (Size A) is a direct replacement with a 66.34mm bore for Honda CR250R engines from 1997-2001, also listed as 66.4mm.

Overview

The standard bore piston kit Size A for Honda CR250R provides a precise 66.34mm bore for restoring compression and power. Designed for 1997-2001 CR250R models, this kit is essential for top-end rebuilds and engine maintenance. It delivers reliable performance for motocross and off-road riding.

Built For Performance

  • Precision-cast 66.34mm piston for accurate fit
  • Includes rings, wrist pin, and circlips for a complete install
  • High-quality aluminum alloy withstands high RPM loads
  • Designed to match OEM specifications for consistent power
  • Tested for durability under extreme conditions

Fits These Machines

  • for Honda CR250R (1997-2001)

On-The-Job Use

  • Motocross racing and track days
  • Enduro and trail riding
  • Engine rebuilding and performance restoration
  • Off-road competition and recreational riding

Specs At A Glance

Bore Size 66.34mm (Size A)
Also Listed As 66.4mm
Fitment Honda CR250R 1997-2001

Good To Know

Q: Are the piston rings pre-gapped? A: Rings are not pre-gapped and should be filed to the manufacturer's clearance specifications during installation.

Q: Can this kit be used with a stock cylinder? A: Yes, this standard bore kit is designed for use with a stock cylinder that is within specifications and not requiring oversizing.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.

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Product Product subtotal Quantity Price Product subtotal
Solid Spare Namura Standard Bore Piston Kit Size A 66.34mm for Honda CR250R 1997-2001 66.4mm
Namura Standard Bore Piston Kit Size A 66.34mm for Honda CR250R 1997-2001 66.4mm
Namura Standard Bore Piston Kit Size A 66.34mm for Honda CR250R 1997-2001 66.4mm
$142.89/ea
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$142.89/ea $0.00