ProX 23.6307NR Crankshaft Bearing - High-Performance Engine Component for Powersports

Description

Upgrade your powersports engine's reliability with ProX's premium crankshaft bearing. Engineered for high-performance applications, this critical component ensures smooth power delivery and extended engine life, delivering consistent performance in demanding conditions.

Key Features

  • Heavy-Duty Construction: Precision-machined steel alloy withstands extreme temperatures and vibrations for long-lasting durability.
  • Sealed Design: Protects internal components from contaminants while retaining lubricant for optimal bearing life.
  • Exact Fitment: Specifically designed for 23.6307NR engine models to ensure perfect alignment and performance.
  • Low Maintenance: Reduced friction and wear extends service intervals, saving time and costs.

Why Choose This Product

ProX crankshaft bearings combine advanced engineering with rugged reliability to meet the demands of off-road and high-performance riding. The sealed construction prevents premature wear from dirt and moisture, while the precision-machined surface ensures smooth rotational efficiency. This bearing is essential for maintaining engine integrity under high-stress conditions, offering riders peace of mind with every ride. Whether you're tackling rugged terrain or racing on the track, this component delivers the durability and performance needed to keep your powersports machine running at peak efficiency.

SKU: GM90B25D89
MPN: 23.6307NR
Category: Engine
Brand: ProX
Stock: Out of Stock
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Upgrade your powersports engine's reliability with ProX's premium crankshaft bearing. Engineered for high-performance applications, this critical component ensures smooth power delivery and extended engine life, delivering consistent performance in demanding conditions.

Key Features

  • Heavy-Duty Construction: Precision-machined steel alloy withstands extreme temperatures and vibrations for long-lasting durability.
  • Sealed Design: Protects internal components from contaminants while retaining lubricant for optimal bearing life.
  • Exact Fitment: Specifically designed for 23.6307NR engine models to ensure perfect alignment and performance.
  • Low Maintenance: Reduced friction and wear extends service intervals, saving time and costs.

Why Choose This Product

ProX crankshaft bearings combine advanced engineering with rugged reliability to meet the demands of off-road and high-performance riding. The sealed construction prevents premature wear from dirt and moisture, while the precision-machined surface ensures smooth rotational efficiency. This bearing is essential for maintaining engine integrity under high-stress conditions, offering riders peace of mind with every ride. Whether you're tackling rugged terrain or racing on the track, this component delivers the durability and performance needed to keep your powersports machine running at peak efficiency.

SKU GM90B25D89
MPN 23.6307NR
Brand ProX
Category Engine
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Reviews

Make Model Years
Kawasaki KLX110 2008-2018
Kawasaki KDX50 2002-2008
Suzuki JR50 2006-2013
Yamaha PW50 2000-2002
Yamaha TTR90 2005-2005
Yamaha TTR110 2008-2012

Frequently Asked Questions

This is a universal fit for both L/R crankshaft positions on compatible models.

No, it's an open caged roller bearing; pack with high-temp grease during install.

Yes, confirmed fit for 2008-2018 Kawasaki KLX110.

ProX uses higher-grade steel and tighter tolerances for better durability in high-RPM applications.

Installation Guide

Difficulty Medium
Est. Time 45 min

Tools Required

  • bearing puller or drift tool
  • socket set
  • torque wrench
  • engine oil
  • case splitter if needed

Pro Tips

  • Heat the case slightly (150°F) to ease installation
  • Use bearing driver for even press
  • Apply assembly lube to rollers before install
  • Check crankshaft runout after assembly

Common Mistakes to Avoid

  • Damaging bearing during press-in
  • Not cleaning case surfaces thoroughly
  • Incorrect orientation

Comparison vs Stock/OEM

ProX aftermarket bearing with premium steel construction vs. OEM pressed bearing

Improvements

  • Higher load capacity
  • Smoother operation at high RPM
  • Better heat resistance

Considerations

  • Requires proper press tools unlike some slip-in OEM designs

Durability & Warranty

Expected Lifespan Matches or exceeds OEM (20,000+ miles with proper maintenance)
Warranty 1 year limited manufacturer warranty
Maintenance Inspect during top-end rebuilds; regrease if engine is disassembled

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