KAX 4x100 Wheel Spacers 15mm 4 Lug Hub Centric - Track Width Fix

In this review of the KAX 4x100 wheel spacers, the bottom line is simple: these 15mm, hub centric spacers are for owners of 4x100 vehicles who need a reliable, bolton way to correct offset or create extra clearance. The reviewer found they deliver a solid, professional feel thanks to forged 6061T6 aluminum construction and SGS certified 10.9 grade hardware, and they are especially useful when rear clearance or stance improvements are the priority. Installation notes and fit checks are emphasized so buyers avoid stud length or fender clearance issues.

Key Features

• Hub centric design: The 54.1mm center bore with lip keeps the wheel centered on the hub to reduce the risk of vibration when installed correctly.
• Forged 6061T6 aluminum: Aircraft grade forging provides strength and lower weight compared with cast alternatives, improving long term durability.
• M12x1.5 studs and nuts: Comes with threaded studs and SGS certified 10.9 class split nuts to ensure secure clamping and resistance to loosening.
• 15mm thickness: Adds a modest 15mm of track width to correct offset and improve tire clearance without drastic changes to suspension geometry.
• Clear installation guidance: The package includes a professional instruction manual and recommended torque of 70-80 ft/lbs to help achieve a correct installation.

Who It's For

The KAX 4x100 spacers are best for owners of compact cars and small coupes that use the 4x100 bolt pattern and a 54.1mm hub bore, including many model years of Yaris, Corolla, Accent, xB, Rio, Prius C, Miata and Echo. If you need a straightforward bolton solution to improve rear track or clear aftermarket wheels, these spacers are a practical, valueminded choice.

Shoppers who should look elsewhere are those with different bolt patterns, vehicles with less than 2 in of fender to wheel clearance, or anyone whose factory studs are longer than 2 in and unwilling to trim them as required. Also consider a thicker spacer or custom adapter if you need more than 15mm of offset correction.

Pros & Cons

Pros

• Solid build quality from forged 6061T6 aluminum gives a confident, durable feel.
• Hub centric 54.1mm bore and included highgrade nuts help minimize vibration when torqued properly.
• Fits a wide range of 4x100 vehicles, making it a versatile option for small cars and light coupes.

Cons

• 15mm is a fixed thickness and may be insufficient for drivers who need larger offset correction.
• Some buyers must trim factory studs if they exceed safe length, adding a small installation step.

Specifications

Bolt Pattern	4x100 mm
Thickness	15 mm
Thread	M12x1.5 studs and nuts
Center Bore	54.1 mm hub centric with lip
Material	Forged 6061T6 aluminum
Hardware Included	2 spacers, 10.9 class split nuts, instruction manual
Recommended Torque	70-80 ft/lbs

Our Verdict

The KAX 4x100 15mm spacers are a practical, wellbuilt option for owners of compatible compact cars who want to fix offset issues or gain modest track width. With forged construction and highgrade hardware they offer good value and low vibration when installed to the recommended torque, though buyers needing larger spacer thickness should select a different size.

Frequently Asked Questions

Will these spacers fit my 4x100 wheels?
They fit wheels and hubs with a 4x100 bolt pattern and a 54.1mm center bore; confirm you have at least 2 in of clearance to the fender before buying.

Are the spacers safe without additional hardware?
Yes, the kit includes M12x1.5 studs and SGS certified 10.9 class split nuts, and the manufacturer recommends torquing to 70-80 ft/lbs for secure installation.

Do I need to trim my factory studs?
Trim only if your factory studs extend more than the spacer plus nut requirements; many installs require trimming when studs exceed safe length.