CHRISTCHURCH'S DEDICATED DIFFERENTIAL SPECIALISTS
Doing it once, doing it right.
We work exclusively on differentials, so every job is properly diagnosed and built for long-term reliability, not guessed. Cars, utes, 4WDs and performance vehicles.
What we do
Diffs only. Nothing else, so every job is done properly. Repairs and rebuilds Full strip, inspect and rebuild to OEM or performance spec. Worn bearings, damaged gears, seals, LSD and open carriers, front and rear. Same price as an exchange. Book it in
Diagnostics and fault finding Whining, clunking, vibration or leaks. We find the cause and tell you whether a repair, rebuild or exchange is the practical option before you commit to anything. Book a diagnostic
Exchange differentials Fully rebuilt, tested units ready to fit, so the vehicle isn't off the road for a week. Nationwide, free freight both ways. Ready today after 2pm. Want us to fit it too? Book in with the team and we'll see when we can fit you in. How it works
LSD supply and fitting Helical and clutch-type units for street, motorsport, towing and 4WD. Wavetrac and Disctrac in stock or to order. We'll advise on the right one for how you drive. LSD range
4WD and off-road Front and rear diff work for utes and 4WDs, including traction upgrades and Part Time 4WD kits (yours or ours). Talk to us
Upgrades and ratio changes Better towing, off-road crawl or acceleration. We match the ratio to your engine, gearbox and tyres, and the calculators on this site let you check it yourself. Ratio not listed? Ask. We may be able to source what you need. Ratio calculators
Bearings and seals Catch a whine or a leak early and it's a bearing kit, not a gearset. Correct preload and setup every time. Bearing kits
Ford 9 inch and performance Brand new 9 inch heads, full spools, 28/31/35 spline axles, HQ to WB conversions. Built for horsepower. Read the HQ to WB guide
Parts supply Bearings, seals, ring and pinion sets, rebuild kits, oils. Retail and trade, with trade pricing once you're logged in. Part not listed? Ask. We may be able to source what you need. Shop parts
2021Founded in Christchurch by George Bull
50+ yrsCombined experience on the floor
Diffs onlyNothing else comes through the door
12 moor 20,000 km on all our work
Book a diagnostic
Drop your details and we'll come back the same working day with a time. Enquiries go straight into our job system with your vehicle attached, so nothing gets lost.
Mon to Fri 8:00am to 5:00pmSaturday By appointment
104 Byron Street, Sydenham Prefer to talk? Call 03 381 0320.