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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.

Differential 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. Unlike open diffs or limited slip diffs, which allow some difference in wheel speed,...

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 Differentials

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...

A comparison graphic of two types of limited slip differentials: a gear type LSD on the left labelled "GEAR" and a clutch type LSD on the right labelled "CLUTCH," with bold text reading "LSD vs" in the centre.

Intro to Limited Slip Differentials

April 30th, 2026

A limited slip differential (LSD) is designed to improve traction by limiting the difference in speed between the two drive wheels. Unlike an open differential, which sends power to the...

Side-by-side comparison of a Jeep with an open differential (left, one rear wheel spins, no traction) and a limited slip differential (right, both rear wheels driving, maximum traction) on a rocky track. Text and arrows annotate each scenario.

LSD vs Open Differential – What’s the Difference?

April 28th, 2026

Most vehicles come from the factory with an open differential, which works well for normal road driving. However, many performance vehicles and 4WDs benefit from upgrading to a limited slip...

A cartoon mechanic stands by a gearbox, holding a clipboard showing diff rebuild costs, with the New Zealand flag in the background. Bold text asks, “How much does a diff rebuild cost in New Zealand?”.

How Much Does a Differential Rebuild Cost in New Zealand?

April 22nd, 2026

If your vehicle has started making whining, clunking, or grinding noises from the differential, you may be wondering what it will cost to repair or rebuild it. Diff rebuild costs...

A puzzled mechanic stands next to an SUV making a loud "whiiine" noise from its differential, with a red question mark above his head and the text "Gearhead Diffs" in the corner.

What Causes Differential Whine? (And How to Fix It)

April 21st, 2026

Differential whine is one of the most common drivetrain issues vehicle owners experience. It often starts as a faint noise that changes with vehicle speed and can gradually become louder...

Close-up of a damaged automotive differential gear with visible metal wear and chipped teeth, surrounded by leaked black oil inside the opened metal housing.

5 Signs Your Differential Is About to Fail

April 20th, 2026

Your vehicle’s differential is a critical part of the drivetrain. It allows the wheels to rotate at different speeds when cornering while transferring power from the driveshaft to the wheels....

A close-up of the Import placeholder for 1804 metal differential gear assembly on a metallic surface, highlighting detailed gear teeth and components, with a blurred workshop in the background.

What Is a Differential?

April 17th, 2026

The differential is a critical component in a vehicle’s drivetrain that allows the wheels to rotate at different speeds while still being driven by the engine. Although most drivers never...

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