KSP 6x5.5 Wheel Spacers 1.5in Hub Centric Adapters - Strong Forged

In this review the KSP 6x5.5 wheel spacers earn high marks for drivers who want a wider track and a more aggressive stance on compatible Toyota trucks and SUVs. The single biggest reason to consider these spacers is their forged 6061 T6 billet aluminum construction combined with a hubcentric lip, which delivers a lightweight yet strong adapter that reduces vibration risk when fitted correctly. The review is based on fit notes, material details and customer feedback about installation, fit and occasional stud concerns.

Key Features

• Forged 6061 T6 aluminum: Provides a high strength-to-weight ratio that resists corrosion and is lighter than cast alternatives.
• Hubcentric design: The wheel-centric lip aligns the spacer to the hub for a more stable fit and reduced vibration when matched to the correct hub bore.
• 1.5in thickness: Moves wheels outward by 1.5in to increase track width for improved stance and clearance for larger tires or brake components.
• M12x1.5 thread pitch: Uses common stud and nut sizing with supplied hardened grade 10.9 bolts for a secure fastening solution.
• Thread locker included: Each kit is supplied with thread locker to help prevent fastener loosening under aggressive driving conditions.
• Compatibility notes: Designed for 6x5.5 to 6x5.5 PCD fitment on many Toyota-based trucks and SUVs but will not fit hubs with locking hubs.

Who It's For

These spacers are best for owners of 4Runner, Tacoma 4WD, FJ Cruiser, Tundra and similar models who need a hubcentric, forged adapter to accommodate wider wheels or achieve a more aggressive track. Enthusiasts who plan to do moderate off-road use or aggressive street driving will appreciate the aircraft-grade material and hardened bolts for durability.

They are not suitable for vehicles with locking hubs or for anyone who cannot confirm their original bolt length and PCD match. Buyers who are uncomfortable evaluating vehicle fit or who require a spacer for 2WD or special-topology models should look elsewhere or contact customer service before purchase.

Pros & Cons

Pros

• Strong, lightweight forged 6061 T6 construction offers good corrosion resistance and durability for aggressive use.
• Hubcentric lip improves wheel alignment on the hub and helps minimize vibration when matched correctly.
• Thread locker and hardened bolts included for secure installation and increased reliability.

Cons

• Some users report isolated cases of stud failure, so careful installation and torque adherence are important.
• Requires verification of original bolt length; shorter bolts need extended lug nuts to remain safe.

Specifications

Bolt Pattern (PCD)	6x5.5 (6x139.7 mm)
Spacer Thickness	1.5in (38mm)
Hub Bore	106mm
Stud/Nut Thread	M12x1.5
Material	Forged 6061 T6 billet aluminum
Fasteners	Heat-treated grade 10.9 bolts with thread locker
Quantity	4 pcs per kit

Our Verdict

The KSP 6x5.5, 1.5in forged spacers are a sensible upgrade for compatible Toyota trucks and SUVs when a hubcentric, lightweight adapter is desired. They offer strong construction, good corrosion resistance and useful installation aids, making them good value for owners who confirm fitment and follow torque and bolt length guidance. Those who need complete fit certainty or have locking hubs should seek alternatives.

Frequently Asked Questions

Will these fit a vehicle with locking hubs?
They will not fit vehicles that have manual locking hubs; verify hub type before purchase.

Do I need extended lug nuts?
If the original bolt length is less than 27mm you must use extended lug nuts for safe fastening on these spacers.

What torque should be used?
Recommended torque for these spacers is 72-80 ft/lbs; follow vehicle and spacer instructions for final torque sequence.