Commerceinstruments Best Selling Products

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Red Line

Red Line 57104 FITS: 75W140NS Gear Oil Quart Gear Oils

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$394.95 $305.88

Also used in clutch-type limited slip differentials in racing for maximum lock up-some users add Limited Slip Friction Modifier in small doses to customize...

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TOYO

TOYO 247430 FITS:Toyo Proxes ST III Tire 285/40R24 112V Tires Sport Truck All-Season

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$548.95 $392.22

Toyo Proxes ST III Tire - 285/40R24 112V

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Red Line

Red Line 58205 FITS: Heavy ShockProof Gear Oil Gallon Gear Oils

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$519.95 $399.96

Many performance racing applications like Sprint, Midget, Dirt Late Model and Quick Change Differentials, Detroit Lockers and spools, NHRA Top Fuel and Funny Car...

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Red Line

Red Line 58204 FITS: Heavy ShockProof Gear Oil Quart Gear Oils

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$402.95 $311.88

Many performance racing applications like Sprint, Midget, Dirt Late Model and Quick Change Differentials, Detroit Lockers and spools, NHRA Top Fuel and Funny Car...

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Red Line

Red Line 57914 FITS: 75W140 Gear Oil Quart Gear Oils

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$407.95 $321.48

This product is not designed for use in most manual transmissions or transaxles, since the extreme slipperiness may cause synchronizer mesh issues that lead...

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Red Line

Red Line 57906 FITS: 75W90 GL-5 Gear Oil 5 Gallon Gear Oils

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$612.95 $479.19

Ester/PAO base stocks and friction modifiers provide additional slipperiness to lower operating temperatures by reducing the sliding friction in hypoid gears Ester/PAO base stocks...

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Red Line

Red Line 57904 FITS: 75W90 Gear Oil Quart Gear Oils

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$394.95 $311.88

Ester/PAO base stocks and friction modifiers provide additional slipperiness to lower operating temperatures by reducing the sliding friction in hypoid gears Ester/PAO base stocks...

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Red Line

Red Line 57804 FITS: 75W110 GL-5 Gear Oil Quart Gear Oils

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$394.95 $310.68

This product is not designed for use in most manual transmissions or transaxles, since the extreme slipperiness may cause synchronizer mesh issues that lead...

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Red Line

Red Line 50304 FITS: MT-90 Quart Gear Oils

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$387.95 $305.88

Popular in Nissan, Mazda, Mitsubishi, VW/Audi, Lotus Elise/Exige, Toyota, Mendeola transmissions and Atlas transfer cases for Off Road Popular in Nissan, Mazda, Mitsubishi, VW/Audi,...

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Red Line

Red Line 50205 FITS: MTL 75W80 GL-4 Gallon Gear Oils

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$506.95 $391.56

Popular for BMW, Honda/Acura, Ford Focus, late-model Mini Cooper, Land Rover/Range Rover LT77S, Mitsubishi, Dodge & Jeep NV1500, NV3500, NV3550 and NV5600 truck transmissions...

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Red Line

Red Line 40605 FITS: Two-Stroke Racing Oil Gallon Motor Oils

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$604.95 $461.96

High-temp stability prevents deposits on combustion chambers, exhaust ports, upper ring and piston crown High-temp stability prevents deposits on combustion chambers, exhaust ports, upper...

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Red Line

Red Line 30704 FITS: D6 ATF Quart Gear Oils

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$284.95 $225.48

Designed to satisfy Dexron-VI®, Mercon®SP, Mercon®LV, Honda DW-1, Toyota WS, Mercedes Benz NAG-2, ZF-LG 6, 6+ and 8 fluids Designed to satisfy Dexron-VI®, Mercon®SP,...

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Red Line

Red Line 30404 FITS: Power Steering Fluid Quart Power Steering Fluids

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$259.95 $209.40

Helps to prevent high-temp steering fade and difficult effort steering at low temps Helps to prevent high-temp steering fade and difficult effort steering at...

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Red Line

Red Line 31004 FITS: DCTF Dual Clutch Transmission Fluid Quart Gear Oils

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$418.95 $323.40

Designed to provide extreme protection in many wet- and dry-style dual clutch transmissions Designed to provide extreme protection in many wet- and dry-style dual...

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Red Line

Red Line 30505 FITS: D4 ATF Gallon Gear Oils

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$357.95 $283.68

Popular applications: Toyota Type T-III and T-IV, Honda ATF-Z1, Nissan Matic D, J & K, Diamond SP-II, SP-III, Mazda ATF M-V, most BMW and...

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Red Line

Red Line 30504 FITS: D4 ATF Quart Gear Oils

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$284.95 $225.48

Popular applications: Toyota Type T-III and T-IV, Honda ATF-Z1, Nissan Matic D, J & K, Diamond SP-II, SP-III, Mazda ATF M-V, most BMW and...

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TOYO

TOYO 356180 FITS:Toyo Open Country A/T 3 Tire 265/75R16 116T Tires On/Off-Road A/T

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$327.95 $233.51

Toyo Open Country A/T 3 Tire - 265/75R16 116T

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Red Line

Red Line 42504 FITS: 20W50 Motorcycle Oil Quart Motor Oils

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$351.95 $269.88

Designed for the latest Big-Twin motorcycle engines that specify 20W50 motor oil, including Milwaukee-Eight, Evolution, Twin Cam and aftermarket engines of similar design Designed...

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Red Line

Red Line 12304 FITS: 5W30 Euro Oil Quart Motor Oils

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$284.95 $218.40

Most popular oil for modern road cars and light trucks, as specified for most late-model BMW, General Motors and Nissan vehicles Most popular oil...

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Red Line

Red Line 12404 FITS: Euro-Series 5W40 Motor Oil Quart Motor Oils

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$284.95 $218.40

Includes the appropriate levels of anti-wear additives and low ash content to ensure compatibility with the latest diesel particulate filters and emissions equipment Includes...

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Red Line

Red Line 11805 FITS: 0W20 Motor Oil Gallon Motor Oils

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$366.95 $279.96

Better flow at extremely cold temperatures compared to 5W20 Better flow at extremely cold temperatures compared to 5W20 Increased fuel economy and improved wear...

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Red Line

Red Line 11804 FITS: 0W20 Motor Oil Quart Motor Oils

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$284.95 $218.40

Better flow at extremely cold temperatures compared to 5W20 Better flow at extremely cold temperatures compared to 5W20 Increased fuel economy and improved wear...

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Red Line

Red Line 11705 FITS: 10W60 Motor Oil Gallon Motor Oils

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$366.95 $279.96

Popular for newer BMW M-cars applications like E46, M3 and E60 M5 Popular for newer BMW M-cars applications like E46, M3 and E60 M5...

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Red Line

Red Line 11704 FITS: 10W60 Motor Oil Quart Motor Oils

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$284.95 $218.40

Popular for newer BMW M-cars applications like E46, M3 and E60 M5 Popular for newer BMW M-cars applications like E46, M3 and E60 M5...

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Red Line

Red Line 11604 FITS: 5W50 Motor Oil Quart Motor Oils

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$284.95 $218.40

Popular for 5.4L Supercharged Ford applications like Shelby GT 500 and Ford GT, Focus RS (WSS-M2C931-B/-C) Popular for 5.4L Supercharged Ford applications like Shelby...

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Red Line

Red Line 11505 FITS: 15W50 Motor Oil Gallon Motor Oils

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$366.95 $279.96

Not recommended for use in cold climates (-20 degrees Celsius/-5 degrees Fahrenheit for 15W50) Not recommended for use in cold climates (-20 degrees Celsius/-5...

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Red Line

Red Line 11404 FITS: 10W40 Motor Oil Quart Motor Oils

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$284.95 $218.40

Best choice for high-performance engines that see street/strip or track activity Best choice for high-performance engines that see street/strip or track activity Popular for...

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Red Line

Red Line 11114 FITS: 0W30 Motor Oil Quart Motor Oils

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$284.95 $218.40

Better flow at extremely cold temperatures compared to 5W30 and 10W30 Better flow at extremely cold temperatures compared to 5W30 and 10W30 For use...

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Red Line

Red Line 11104 FITS: 0W40 Motor Oil Quart Motor Oils

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$284.95 $218.40

Suitable for VW/Audi 505.00/503.01/ 502.00/500.00, BMW LL-01, water-cooled Porsche A40 and Mercedes-Benz 229.5/229.3 applications Suitable for VW/Audi 505.00/503.01/ 502.00/500.00, BMW LL-01, water-cooled Porsche A40...

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Red Line

Red Line 10505 FITS: 50WT Race Oil Gallon Motor Oils

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$446.95 $339.40

Popular with sprint and midget applications on methanol -- offers less frequent oil changes due to less fuel dilution Popular with sprint and midget...

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Red Line

Red Line 10504 FITS: 50WT Race Oil Quart Motor Oils

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$351.95 $266.40

Popular with sprint and midget applications on methanol -- offers less frequent oil changes due to less fuel dilution Popular with sprint and midget...

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TOYO

TOYO 247450 FITS:Toyo Proxes ST III Tire 305/35R24 112W Tires Sport Truck All-Season

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$561.95 $401.66

Toyo Proxes ST III Tire - 305/35R24 112W

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Yokohama Tire

Yokohama Tire 110133303 FITS:Yokohama Geolandar M/T G003 Tire 32X11.50R15 113Q Tires Off-Road Max Traction

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$324.06 $242.55

Yokohama Geolandar M/T G003 Tire - 32X11.50R15 113Q

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Haltech

Haltech HT-010906 FITS: 250 PSI TI Fuel/Oil/Wastegate Pressure Sensor Sensors

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$211.07

The Haltech HT-010906 FITS: 250 PSI TI Fuel/Oil/Wastegate Pressure Sensor Sensors is a quality Sensors for your vehicle. Every part we sell is fitment-verified...

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K&N Engineering

K&N Engineering 69-9508T FITS:K&N 2014 Audi A4 2.0L Turbo Typhoon Air Intake Cold Air Intakes

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$457.95 $304.12

The K&N 69-9508T Typhoon air intake system is a free-flowing, mandrel-bent aluminum tube air induction system designed to fit specific Audi A4, A5 and...

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K&N Engineering

K&N Engineering 69-9505T FITS:K&N 09-10 Audi A4 2.0L Typhoon Air Intake Cold Air Intakes

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$518.95 $345.04

The K&N 69-9505T Typhoon air intake system is a free-flowing, silicone tube air induction system designed to fit some Audi A4 models. The restrictive...

Items 9685 to 9720 of 10465 total

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Hard Folding Tonneau Covers — Security, Style & Weather Protection

Hard folding tonneau covers are the best balance of security, weather sealing, and bed access. Unlike soft roll-up covers, the hard folding design uses rigid aluminum or fiberglass panels that lock in place — protecting bed contents from theft and from weather without permanently closing off bed access. They fold in thirds (or quarters) to give you full bed access when you need it.

Why Hard Fold Over Soft or Retractable

Security: Rigid panels with locking mechanisms resist cut-and-grab theft that soft vinyl covers are vulnerable to
Weather sealing: Tight panel-to-panel seals and perimeter weatherstripping keep rain and snow out better than most soft covers
Bed access: Fold open in 15 seconds — full bed length available for oversized loads without removing the cover
Aerodynamics: Flat closed profile improves fuel economy vs open bed or soft covers that billow at speed

Panel Construction

Extruded aluminum panels with powder coat finish are the most common and most durable construction. Fiberglass panels offer a higher-gloss finish but are heavier. ABS plastic panels are lightweight but less dent-resistant. All three seal effectively in most climates.

Brands We Carry

BAKFlip · Extang Solid Fold · Access UltraFlip · Lund Genesis · UnderCover Flex. All matched to your truck year/make/model and bed length. No drilling required — clamp-on installation.

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