KAX 4x137 ATV Wheel Spacers 1.5 in - Bolt On Track Widening

In this review of the KAX 4x137 ATV wheel spacers, the bottom line is simple: these 1.5 in bolt-on spacers are for ATV owners who need a reliable, vehicle-specific way to widen track and correct offset when fitting aftermarket wheels. The reviewer found them well made from forged 6061-T6 aluminum, supplied with high-strength 10.9 nuts, and straightforward to fit when the vehicle has sufficient clearance; that build quality and strong fasteners are the single biggest reason to consider them for compatible Kawasaki, Can-Am and similar models.

Key Features

• Forged 6061-T6 construction: Provides a durable, lightweight spacer that resists bending and holds up to off-road use.
• 1.5 in thickness: Widens the track enough to fix clearance and offset issues with many aftermarket wheels while improving stability.
• M10x1.25 threaded studs and 10.9 nuts: High strength fasteners give secure wheel mounting and confidence under varying temperatures.
• 110mm center bore, lug centric 4x137: Ensures correct centering on compatible hubs for a snug fit without a hub lip.
• Included instructions and hardware: The kit arrives with split nuts and a manual to simplify installation and torque recommendations.

Who It's For

The KAX 4x137 spacers are aimed at owners of older Kawasaki models and certain Can-Am machines who need a bolt-on solution to broaden their track or resolve clearance issues with aftermarket wheels. Riders fitting larger tires for trail or utility use, or who want a wider stance for stability while riding rough terrain, will appreciate the reinforced aluminum forging and supplied high-grade hardware.

These spacers are not for every ATV owner; they require a 4x137 bolt pattern and about 2 in or more clearance between the fender and wheel. If your factory wheel studs are long enough or you are uncomfortable trimming studs when needed, or your machine uses a different bolt pattern, look for a model matched to your hub rather than this kit.

Pros & Cons

Pros

• Solid build from forged 6061-T6 aluminum gives confidence in durability and longevity.
• Included M10x1.25 studs/nuts and instructions make installation straightforward for DIYers.
• Effectively widens track to resolve clearance and offset issues and improves stance for off-road stability.

Cons

• Some users may see cosmetic scratches during installation, so careful handling is needed.
• Requires checking fender clearance and potential stud trimming on some vehicles before purchase.

Specifications

Brand	KAX
Bolt Pattern	4x137
Thickness	1.5 in (38mm)
Thread Size	M10x1.25 studs and nuts
Center Bore	110mm (no lip)
Included	2 spacers, 10.9 class split nuts, manual
Recommended Torque	45-55 ft/lbs

Our Verdict

The KAX 4x137 1.5 in wheel spacers are a practical, well-made option for riders with compatible Kawasaki or Can-Am ATVs who need to widen their track or correct wheel offset. The forged 6061-T6 construction and graded fasteners deliver real value, but buyers must confirm clearance and stud length before fitting. For those who match the fitment checks, these spacers are a cost-effective way to improve stance and wheel fitment.

Frequently Asked Questions

Will these spacers fit my ATV?
They fit vehicles with a 4x137 bolt pattern and a 110mm hub bore; confirm you have at least 2 in of clearance between fender and wheel and compatible stud length.

Are the spacers safe for off-road use?
Yes, the spacers are forged from 6061-T6 aluminum and use 10.9 grade nuts, designed for durable off-road performance when installed and torqued to the recommended 45-55 ft/lbs.

Do I need to trim my wheel studs?
You may need to trim studs if the factory studs extend more than needed; the manual warns trimming is necessary when the spacer thickness and stud length require it.