SPC Performance MAGNET ADJ CAMBER GAUGE - 81139

The SPC Performance Magnetic Adjustable Camber Gauge (Part #81139) is a professional-grade wheel alignment tool designed for DIY enthusiasts, home mechanics, and shop technicians who need a reliable, accurate way to measure camber on virtually any vehicle. Built by Specialty Products Company — the recognized leader in automotive alignment parts, tools, and education — this magnetic camber gauge attaches directly to rotors or spindles for fast, repeatable readings without the need for bulky equipment or a lift.

Key Features & Benefits

• Magnetic Head for Fast, Tool-Free Attachment: The magnetic head attaches firmly to rotors or spindles, letting you take a reading in seconds without clamps, adapters, or helper tools — ideal for quick alignment checks in the driveway or shop.
• Simple ±3° Leveling Adjustment: The built-in leveling adjustment covers a +/−3° range, giving you the flexibility to zero out the gauge on uneven surfaces and get an accurate baseline reading every time.
• Durable, Non-Magnetic Casing: The gauge is housed in a non-magnetic casing that resists interference from surrounding metal components, protecting the accuracy of the bubble vial and ensuring readings aren't skewed by the vehicle's own metalwork.
• Inexpensive & Portable: At a price well below dedicated alignment rack systems, the 81139 gives home builders and alignment hobbyists a cost-effective path to checking and setting camber — and it fits easily in a toolbox or track bag.
• Very Accurate Readings: SPC describes this tool as "very accurate," reflecting the same engineering standards the company applies to its full alignment product line — all designed, engineered, and tested in the USA.
• Replacement Parts Available: SPC offers a replacement bubble vial (#81134) and replacement magnet (#81133), so the tool can be serviced rather than replaced if a component wears out over time.
• 90-Day Manufacturer's Defect Warranty: Backed by SPC's 90-day manufacturing defect warranty for added peace of mind.

Specifications

• Brand: SPC Performance (Specialty Products Company)
• Part Number: 81139
• Leveling Adjustment Range: +/−3°
• Attachment Method: Magnetic head — attaches to rotors or spindles
• Casing Material: Non-magnetic, durable housing
• Warranty: 90 days — manufacturer's defect
• Replacement Bubble Vial: SPC #81134
• Replacement Magnet: SPC #81133
• Proposition 65: Yes — see product labeling for details
• Condition: New

Fitment

The SPC 81139 Magnetic Adjustable Camber Gauge is a universal alignment tool — it is not vehicle-specific. Because it attaches magnetically to a rotor or spindle face, it can be used on a wide range of passenger cars, trucks, SUVs, and performance vehicles as long as the wheel/hub assembly provides an accessible metal rotor or spindle surface for the magnetic head to seat against. This makes it equally useful for weekend track-day prep, lowered street cars, lifted trucks, or routine alignment verification after suspension work. Always confirm the rotor or spindle face on your specific application is accessible and ferrous (magnetic) before purchase.

What's in the Box

• 1x SPC Performance Magnetic Adjustable Camber Gauge (#81139)
• Installation instructions

Note: Replacement bubble vial (#81134) and replacement magnet (#81133) are sold separately by SPC Performance.

Why Buy from ThreePiece.us

ThreePiece.us is a dedicated aftermarket suspension and wheel fitment specialist — not a general-purpose marketplace. When you order the SPC Performance 81139 here, you get free shipping on every order, no minimum required. Need to spread out the cost? Affirm financing is available at checkout so you can get the tools you need now and pay over time. Have a fitment or application question before you buy? Our team is here to help — reach out and we'll point you in the right direction.

Frequently Asked Questions

What surfaces does the magnetic head attach to?

According to SPC Performance, the magnetic head is designed to attach firmly to rotors or spindles. The target surface must be ferrous (magnetic metal) for the gauge to seat properly and give an accurate reading.

What is the adjustment range of this camber gauge?

The 81139 has a leveling adjustment of +/−3°. This allows you to zero out the gauge to account for minor surface variation before taking your camber measurement.

Can I get replacement parts if the vial or magnet wears out?

Yes. SPC Performance offers a replacement bubble vial under part number #81134 and a replacement magnet under part number #81133, both sold separately. This means you can service the gauge rather than replacing the entire unit.

Is this tool covered by a warranty?

SPC Performance backs the 81139 with a 90-day manufacturer's defect warranty. For full warranty details, refer to SPC's warranty policy at spcalignment.com/warranties.