The best spacer depends on your vehicle’s bolt pattern, hub bore, stud thread, and the fitment style your setup requires. The KSP 8×170 spacer is explicitly listed as lug-centric and is designed for certain Ford F-250 and F-350 applications. Other picks below specify hub-bore dimensions or vehicle fitment, but do not identify themselves as lug-centric, so confirm the required centering style before ordering. The 1.5-inch options suit buyers seeking a moderate change in wheel position; the 2-inch choices create a larger offset change.
| Product | Best For | Thickness | Key Fitment Details |
|---|---|---|---|
| KSP 6×5.5, 1.5-inch | Listed GM truck and SUV applications | 1.5 inches | 6×139.7, 78.1mm bore, M14x1.5 |
| KSP 6×5.5, 2-inch | Listed GM vehicles and select Ram 1500s | 2 inches | 6×139.7, 108mm bore, M14x1.5 |
| Wheel Accessories Parts 8×170 | Ford Super Duty buyers seeking a hub-centric listing | 1.5 inches | 124.9mm bore, M14x1.5 |
| KSP 8×170, 2-inch | F-250/F-350 buyers needing a lug-centric spacer | 2 inches | 125mm bore, M14x1.5; not hub-centric |
| KSP 6×5.5 for Toyota | Listed Tacoma, 4Runner, and related applications | 1.5 inches | 106mm bore, M12x1.5 |
KSP 6×5.5 1.5-Inch Spacers
Best for: Owners of listed Chevrolet, GMC, Cadillac, and related vehicles who need a 6×139.7 pattern and 78.1mm hub bore. The manufacturer lists applications including Silverado 1500, Sierra 1500, Tahoe, Suburban, Yukon, and Escalade; year ranges vary by model.
This four-piece set is made from forged 6061-T6 aluminum, has a black anodized finish, and uses M14x1.5 studs. KSP also specifies heat-treated SCM435 hardware, thread locker, and a recommended torque of 85–95 ft-lb. Choose it if its exact bore and vehicle fitment match your setup.
Limitation: The listed 78.1mm bore is specific; do not assume it fits a vehicle with another hub size. The listing does not explicitly label this spacer lug-centric.
KSP 6×5.5 2-Inch Spacers
Best for: Buyers whose fitment calls for a 2-inch spacer, a 6×139.7 bolt pattern, and a 108mm hub bore. The listing names several GM truck and SUV applications as well as 2019–2026 Ram 1500, but year and configuration should be checked against the seller’s full fitment details.
The four-piece set uses forged 6061-T6 aluminum, M14x1.5 hardware, heat-treated grade 10.9 bolts, a black anodized surface, and thread locker. Its stated recommended torque is 85–95 ft-lb. It is a better choice than the 1.5-inch KSP option when the required spacer thickness is 2 inches and the 108mm bore is correct.
Limitation: This spacer is substantially thicker than a 1.5-inch option, and its 108mm bore differs from the other KSP 6×5.5 listing. Confirm both dimensions before purchase; the listing does not explicitly call it lug-centric.
Wheel Accessories Parts 8×170 Spacers
Best for: Ford Super Duty owners who need an 8×170 pattern, 124.9mm hub bore, and 1.5-inch thickness. The listing identifies fitment for 2003–2005 Excursion and 2003-and-newer F-250 and 2000-and-newer F-350 Super Duty models.
This four-piece set is forged from 6061-T6 aluminum and specifies M14x1.5 threads. The manufacturer describes it as hub-centric, with matching 124.9mm vehicle-hub and wheel IDs. Its stated uses include widening the stance and increasing tire or brake-caliper clearance.
Limitation: This is not the lug-centric choice in this guide. Select it only when the stated hub-centric design, bolt pattern, and bore match the vehicle and wheel requirements.
KSP 8×170 2-Inch Lug-Centric Spacers
Best for: F-250 and F-350 owners who specifically require a lug-centric spacer. The listing identifies this product as lug-centric and says it is not hub-centric. Its specifications are an 8×170 pattern, 125mm center bore, M14x1.5 threads, and 2-inch thickness.
The two-piece set has a black anodized finish and heat-treated grade 10.9 Geomet bolts. KSP lists a recommended torque of 85–95 ft-lb and names 2003–2026 F-250 and F-350 fitment. Choose this over the 1.5-inch Ford option only if the 2-inch thickness and lug-centric design are appropriate for the specific setup.
Limitation: The listing says it is not hub-centric and provides two spacers per package. Verify that lug-centric is the correct design for the vehicle and wheel combination.
KSP 6×5.5 Toyota 1.5-Inch Spacers
Best for: Buyers with a listed Toyota or Lexus application that matches the 6×139.7 pattern, 106mm hub bore, and M12x1.5 thread pitch. Listed vehicles include certain 4Runner, Tacoma, FJ Cruiser, Sequoia, Tundra, and Lexus GX models. The listing excludes some versions and years, so check its fitment notes carefully.
This four-piece set is 1.5 inches thick and includes thread locker. KSP recommends 72–80 ft-lb torque. The manufacturer warns that if original bolt length is under 27mm, extended lug nuts may be needed, particularly for Tacoma and FJ applications.
Limitation: The listing says it will not fit vehicles with locking hubs and calls out exclusions for some newer and specialized models. It does not explicitly describe the spacer as lug-centric.
Buying Guide: How to Choose Wheel Spacers
How do you confirm fitment?
Match the vehicle and wheel bolt patterns, hub-bore dimensions, stud thread pitch, spacer thickness, and centering style. A spacer can have the correct bolt pattern but still have the wrong bore or thread. Check the exact model year and trim against the complete product fitment information before ordering.
What is the difference between lug-centric and hub-centric?
A hub-centric spacer is designed around a specified hub bore to center on the vehicle hub. A lug-centric spacer relies on the lug hardware for centering. The supplied listings explicitly identify only the KSP 8×170, 2-inch model as lug-centric and not hub-centric. Do not infer centering type from a product’s bolt pattern alone.
Should you choose 1.5 or 2 inches?
Choose the thickness required for the intended wheel position and verified clearance. A 2-inch spacer moves the wheel farther outward than a 1.5-inch spacer. Check available clearance and follow the product’s installation and torque instructions; do not substitute a different thickness based only on appearance.
What should you verify before installation?
Confirm that the wheel seats correctly, the threads match, and the hardware and torque specification correspond to the selected spacer. Check whether extended lug nuts are required. If fitment details conflict or the vehicle has a special hub configuration, confirm requirements with a qualified installer before driving.
Frequently Asked Questions
Which product here is explicitly lug-centric?
The KSP 8×170, 2-inch spacer for listed F-250 and F-350 applications is explicitly described as lug-centric and not hub-centric.
Are all 6×5.5 spacers interchangeable?
No. The listed 6×5.5 products have different hub bores, thread pitches, thicknesses, and vehicle applications. Match every specification, not just the bolt pattern.
Can I use a hub-centric spacer when I need lug-centric?
These designs are not interchangeable by assumption. Confirm the required centering style for the vehicle and wheel before selecting a spacer.
Do these products include four spacers?
Most listings above specify four pieces. The KSP 8×170, 2-inch lug-centric listing specifies two pieces, so check quantity when planning an installation.
What does spacer thickness change?
Thickness determines how far the wheel is moved outward. Compare the listed thickness with the clearance and fitment requirements for the vehicle rather than choosing by bolt pattern alone.