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Superfinished differential gears: Is it worth it?

Superfinished Differential Gears: Is It Worth It?

June 24th, 2026

Superfinished differential gears have become increasingly popular in motorsport and high-performance driveline applications. When building a high-performance differential, most people focus on gear ratios, LSD choice, bearings, and setup accuracy....

how to work out a diff ratio

How to Work Out a Diff Ratio

June 22nd, 2026

If you’ve ever asked yourself “What diff ratio do I have?” or wondered how to work out a diff ratio, you’re not alone. Knowing your differential ratio is important when...

Solid vs Rubber diff bushes

Solid Diff Bushes vs Rubber Diff Bushes

June 19th, 2026

When upgrading or rebuilding a differential, most people focus on gears, LSDs, lockers, and bearings. However, the diff bushes also play an important role in how the vehicle performs and...

Two silver pick-up trucks face each other on a reflective hexagonal floor—one standard, one lifted with large tyres. Bold text above them announces, "Choosing the Right Diff Ratio" with a blue lightning background, emphasising the importance of selecting the correct diff ratio.

Choosing the Right Diff Ratio For Your Wheels and Transmission

June 17th, 2026

Choosing the right diff ratio is one of the most important considerations when modifying a vehicle. Whether you’re fitting bigger tyres to a 4WD, swapping transmissions in a classic car,...

A modified black race car is set against a dynamic blue and black background with lightning effects. Bold text reads: "Choosing the Right LSD or Diff Centre for your race application.

Choosing the Right LSD or Diff Centre for Your Race Application

June 15th, 2026

When building a race car, one of the most important decisions is choosing the right LSD or diff centre for your race application. The differential plays a major role in...

Solid Pinion Spacers vs. Crush Sleeves: What’s the Difference? A metal Solid Pinion Spacer is shown on the left and a metal crush sleeve on the right, highlighted by a blue lightning bolt in the background.

Solid Pinion Bearing Spacers vs Crush Sleeves

June 12th, 2026

Solid pinion spacers are one of the most common upgrades we recommend when rebuilding a differential. Replacing the factory crush sleeve with a solid pinion spacer can improve preload stability...

A comparison image titled "Ball Bearings vs Tapered Roller Bearings in Differentials" shows a ball bearing on the left and a tapered roller bearing on the right, highlighting their uses: ball bearings for speed, tapered rollers for load capacity.

Ball Bearings vs Tapered Roller Bearings in Differentials

June 10th, 2026

Bearings play a critical role in the strength, durability, and lifespan of a differential. Inside every diff assembly, bearings support rotating components such as the pinion gear and differential carrier....

Two glass beakers on a dark background: one with clean amber oil, the other with dirty, dark "Lifetime Diff Oil." Bold text asks, "Lifetime diff oil— is it really lifetime?" Icons highlight clean oil protection and the costs of neglect.

Lifetime Diff Oil, Is It Really Lifetime?

June 8th, 2026

Many modern vehicles are marketed as having “lifetime differential oil”, meaning the oil is not intended to be serviced during normal vehicle ownership. This can give the impression that diff...

A metallic diff locker with an attached wire is shown on a dark textured background with blue lightning. Bold blue text reads, "Why your differential locker won't engage.

Why Your Differential Locker Won’t Engage

June 5th, 2026

A diff locker that won’t engage can be frustrating, especially when you need it most in off-road conditions. Whether your vehicle is fitted with an air locker, electronic locker (E-Locker),...

Two differential lockers, labelled "Air-Locker" and "E-Locker," are shown side by side with electric blue lightning effects and a "VS" in between them on a black background.

Air Locker vs E-Locker: Which Is Better?

June 3rd, 2026

If you’re building a 4WD for serious off-road use, one of the biggest decisions you’ll make is whether to run an air locker (e.g. ARB Air Locker) or an electronic...

Three mechanical locker parts are displayed in a row on a textured surface, with glowing blue light effects and the bold text “MECHANICAL LOCKERS” in the background.

Mechanical Lockers: How an Auto Locker Works

June 2nd, 2026

Mechanical lockers, often referred to as auto lockers or lunch-box lockers, are a type of differential locker that engage automatically when torque is applied to the drivetrain. Unlike air lockers...

A shiny metal differential with multiple holes is displayed on a black background with blue lighting effects. The words "Air Lockers" appear in bold, electric blue lettering to the left of the part.

Air Lockers: How They Work

May 27th, 2026

Air lockers are one of the most popular types of selectable diff lockers used in off-road vehicles. Unlike automatic lockers that engage on their own, air lockers allow the driver...

A metallic E-locker differential with a connected cable is showcased on a dark textured surface, illuminated by blue lighting, with bold blue text reading “E-Lockers” on the left side.

E-Lockers: How They Work

May 22nd, 2026

Electronic diff lockers, commonly referred to as E-Lockers, are a type of selectable locking differential that use an electrical actuator to lock the differential when required. Like air lockers, E-Lockers...

A shiny differential locker is displayed on a dark textured background with blue flames behind it. Bold blue text on the left reads "Diff Lockers.

Diff Lockers: What They Are and How They Work

May 18th, 2026

Diff lockers are designed to provide maximum traction by locking both wheels on an axle together. However, unlike open diffs or limited slip diffs, a diff lock forces both wheels...

A metallic helical limited slip differential (LSD) with gears is displayed against a dark, textured background with blue smoke. Bold white and blue text reads “Helical LSD” on the left side.

Helical LSDs – How They Work and Their Pros & Cons

May 8th, 2026

Helical limited slip differentials (LSDs) are one of the most popular modern differential upgrades for both street and performance vehicles. Unlike traditional clutch-type LSDs, helical LSDs use a series of...

A polished metal mechanical part, possibly an automotive differential, is set against a dark background with blue smoke. The bold text "Ramp Rider" in blue is displayed on the left side of the image.

Understanding 1 Way, 1.5 Way and 2 Way LSD’s

May 6th, 2026

Ramp rider limited slip differentials are one of the most common LSD designs used in motorsport and performance vehicles. They are particularly popular in drifting, circuit racing, and high-performance street...

A polished metal automotive differential part sits on a dark surface with blue smoke in the background and the word "Posi" written in bold blue script on the left side.

Positraction LSD (Posi): How They Work

May 4th, 2026

A Positraction LSD, often referred to simply as a “Posi”, is one of the most well-known types of clutch-type limited slip differentials. The design became widely known through American performance...

Various metal components and clutch plates of limited slip differentials are arranged on a dark surface, with the text “Different Types of Clutch-Type Limited Slip Differentials” displayed above.

Different Types of Clutch Type Limited Slip Differentials

May 1st, 2026

Clutch-type limited slip differentials are one of the most widely used LSD designs in performance vehicles, motorsport applications, and some factory drivetrain setups. These differentials use friction plates inside the...

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