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SPC Performance - Alignment Parts & Tools

SPC (Specialty Products Company) has been setting the standard in wheel alignment technology since 1971. Originating in Denver with hand tools, SPC evolved into a global innovator based in Longmont, Colorado, delivering over 1,500 precision parts and alignment tools—from control arms and cam kits to EZ Cams™, shims, and xAxis™ rod ends—many of which are manufactured in-house under ISO‑9001 and IATF‑16949 standards.

SPC empowers both alignment shops and enthusiasts with practical, OE-matched solutions. Their EZ Cams™ add ±1.75° strut adjustability, while Builder Series arms and adjustable control arms serve lifted, lowered, and race-prepped vehicles. The company's commitment extends to deep resources—online & in-person training, alignment apps, and educational materials tailored for professionals .

With a proven record in drift (Papadakis Racing), USTCC, IMSA, and off-road, SPC parts are tested under extreme conditions and trusted for precise alignment, improved handling, and tire longevity

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SPC Performance Weld-In Ring Kit 2.00 in. ID SPC Performance Weld-In Ring Kit 2.00 in. ID
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SPC Performance Weld-In Ring Kit 2.00 in. ID
Use this weld in receiver to create your own control arm or chassis mount with an SPC xAxis sealed flex joint. This weld-in end ring...
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$16.89 $19.98
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SPC Performance Weld-In Ring Kit 1.75 in. ID SPC Performance Weld-In Ring Kit 1.75 in. ID
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SPC Performance Weld-In Ring Kit 1.75 in. ID
Use this weld in receiver to create your own control arm or chassis mount with an SPC xAxis sealed flex joint. This weld-in end ring...
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$15.42 $18.25
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SPC Performance Weld-In Ring Kit 1.25 in. ID SPC Performance Weld-In Ring Kit 1.25 in. ID
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SPC Performance Weld-In Ring Kit 1.25 in. ID
Use this weld in receiver to create your own control arm or chassis mount with an SPC xAxis sealed flex joint. This weld-in end ring...
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$12.88 $15.24
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SPC Performance R SQR RECVR 1/2-20 SPC Performance R SQR RECVR 1/2-20
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SPC Performance R SQR RECVR 1/2-20
RH Square rod end receiver of 4140 N Chromoly Steel. Includes Grade 8 bolt, metal locknut and 2 AN washers. Welds into custom plate assemblies....
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$98.83 $116.96
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SPC Performance R SQR RECVR 1/2-20 SPC Performance R SQR RECVR 1/2-20
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SPC Performance R SQR RECVR 1/2-20
RH Square rod end receiver of 4140 N Chromoly Steel. Includes Grade 8 bolt, metal locknut and 2 AN washers. Welds into custom plate assemblies....
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$108.25 $128.11
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SPC Performance R SQR REC 1 1/4-12 SPC Performance R SQR REC 1 1/4-12
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SPC Performance R SQR REC 1 1/4-12
Welds into stock tubing sizes. Thread size: 1-1/4" 12, Width 1.813", Thread length: 1.7", Overall length: 2.563", Cinch clamp bolt requirements: Diameter: 0.3125", Clamp width:...
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$103.30 $122.24
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SPC Performance R RND RECVR 5/8-18 SPC Performance R RND RECVR 5/8-18
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SPC Performance R RND RECVR 5/8-18
Welds into stock tubing sizes.Thread Size 5/8"-18 Outside Dia..870".Thread Length 1.3",Overall Length 1.938" Nominal Tube Size 1.000" OD , Recommended Tube Wall Thickness 0.065" May...
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$84.18 $99.62
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SPC Performance R RND RECVR 3/4-16 SPC Performance R RND RECVR 3/4-16
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SPC Performance R RND RECVR 3/4-16
Welds into stock tubing sizes.Thread Size 3/4"-16 Outside Dia.1.120".Thread Length 1.4",Overall Length 2.125" Nominal Tube Size 1.250" OD , Recommended Tube Wall Thickness 0.065" May...
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$83.53 $98.84
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SPC Performance L RND RECVR 7/8-14 SPC Performance L RND RECVR 7/8-14
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SPC Performance L RND RECVR 7/8-14
Thread Size 7/8"-14 Outside Dia. 1.260" Thread Length 1.5" Overall Length 2.250" Nominal Tube Size 1.500" OD Recommended Tube Wall Thickness 0.120" Recommended Tube Wall...
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$94.15 $111.42
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SPC Performance L RD RECVR 7/8-14 SPC Performance L RD RECVR 7/8-14
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SPC Performance L RD RECVR 7/8-14
Thread Size 7/8"-14 Outside Dia. 1.370" Thread Length 1.5" Overall Length 2.250" Nominal Tube Size 1.500" OD Recommended Tube Wall Thickness 0.065" Recommended Tube Wall...
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$94.17 $111.45
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SPC Performance R RND RECVR 7/8-14 SPC Performance R RND RECVR 7/8-14
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SPC Performance R RND RECVR 7/8-14
Thread Size 7/8"-14 Outside Dia. 1.260" Thread Length 1.5" Overall Length 2.250" Nominal Tube Size 1.500" OD Recommended Tube Wall Thickness 0.120" Recommended Tube Wall...
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$103.64 $122.64
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SPC Performance R RND REC 7/8-14 SPC Performance R RND REC 7/8-14
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SPC Performance R RND REC 7/8-14
Thread Size 7/8"-14 Outside Dia. 1.370" Thread Length 1.5" Overall Length 2.250" Nominal Tube Size 1.500" OD Recommended Tube Wall Thickness 0.065" Recommended Tube Wall...
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$94.17 $111.45
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SPC Performance L RND RECVR 1 1/4-12 SPC Performance L RND RECVR 1 1/4-12
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SPC Performance L RND RECVR 1 1/4-12
Thread Size 1 1/4" Outside Dia 1.760" Thread Length 1.7" Overall Length 2.563" Nominal Tube Size 2.00" OD Recommended Tube Wall Thickness 0.120" We Recommend...
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$115.27 $136.42
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SPC Performance R RND RECVR 1 1/4-12 SPC Performance R RND RECVR 1 1/4-12
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SPC Performance R RND RECVR 1 1/4-12
Thread Size 1 1/4" Outside Dia 1.760" Thread Length 1.7" Overall Length 2.563" Nominal Tube Size 2.00" OD Recommended Tube Wall Thickness 0.120" We Recommend...
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$104.29 $123.42
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SPC Performance ROUND BRG RECVR .8125 SPC Performance ROUND BRG RECVR .8125
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SPC Performance ROUND BRG RECVR .8125
Bearing Dia 0.8125",Bearing Race Width 0.4060", Receiver OD 1.063",Receiver Height 0.58" Bearing Offset 0.0170". California Residents WARNINGInstallation Instructions
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$20.58 $24.36
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SPC Performance ROUND BRG RECVR 1.0in. SPC Performance ROUND BRG RECVR 1.0in.
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SPC Performance ROUND BRG RECVR 1.0in.
Bearing Dia 1.0000",Bearing Race Width 0.5050", Receiver OD 1.250",Receiver Height 0.71" Bearing Offset 0.0125". California Residents WARNINGInstallation Instructions
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$18.60 $22.02
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SPC Performance ROUND BRG RECVR 1.1875in. SPC Performance ROUND BRG RECVR 1.1875in.
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SPC Performance ROUND BRG RECVR 1.1875in.
Bearing Dia 1.1875",Bearing Race Width 0.5670", Receiver OD 1.483",Receiver Height 0.84" Bearing Offset 0.0265". California Residents WARNINGInstallation Instructions
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$21.59 $25.56
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SPC Performance 4 in. Hd Support Plate (6) SPC Performance 4 in. Hd Support Plate (6)
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SPC Performance 4 in. Hd Support Plate (6)
Spread the load! "Z" blocks and other axle spacers used by Hendrickson, Freightliner, Kenworth, Mack, Hollis, Sterling, Ford and others create pressure points that will...
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$114.15 $135.09
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SPC Performance ZINC SHIMS 4x6.5x5.0 deg. SPC Performance ZINC SHIMS 4x6.5x5.0 deg.
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SPC Performance ZINC SHIMS 4x6.5x5.0 deg.
These over-the-road heavy duty truck axle shims are a fast a nd accurate means to align front or rear axles of most popul ar tandem...
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$146.22 $173.04
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SPC Performance AL SHIMS 4X6.5X5 deg.(6) SPC Performance AL SHIMS 4X6.5X5 deg.(6)
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SPC Performance AL SHIMS 4X6.5X5 deg.(6)
These economical over-the-road heavy duty truck axle shims a re our lowest cost option. With average compression strength and hardness these shims are available in...
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$68.55 $81.13
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SPC Performance Zinc Shims 4X6.5X4.0 deg. SPC Performance Zinc Shims 4X6.5X4.0 deg.
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SPC Performance Zinc Shims 4X6.5X4.0 deg.
These over-the-road heavy duty truck axle shims are a fast a nd accurate means to align front or rear axles of most popul ar tandem...
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$123.86 $146.58
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SPC Performance AL SHIMS 4X6.5X4 deg.(6) SPC Performance AL SHIMS 4X6.5X4 deg.(6)
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SPC Performance AL SHIMS 4X6.5X4 deg.(6)
These economical over-the-road heavy duty truck axle shims a re our lowest cost option. With average compression strength and hardness these shims are available in...
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$62.78 $74.29
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SPC Performance ZINC SHIMS 4x6.5x3.5 deg. SPC Performance ZINC SHIMS 4x6.5x3.5 deg.
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SPC Performance ZINC SHIMS 4x6.5x3.5 deg.
These over-the-road heavy duty truck axle shims are a fast a nd accurate means to align front or rear axles of most popul ar tandem...
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$116.23 $137.55
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SPC Performance AL SHIMS 4X6.5X3.5 deg.(6) SPC Performance AL SHIMS 4X6.5X3.5 deg.(6)
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SPC Performance AL SHIMS 4X6.5X3.5 deg.(6)
These economical over-the-road heavy duty truck axle shims a re our lowest cost option. With average compression strength and hardness these shims are available in...
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$59.96 $70.96
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