RMB Performance

Big shout out to for sorting our replacement engine just before Christmas.

Having clocked over 10,000km without issues.

We supplied Nick with a second hand block and he sorted the rest. Using a mixture of genuine and high quality aftermarket components he put together one hell of a

New pistons
New cylinder head
New bearings throughout
New injectors and injection pump

Fitted with a high flow factory replacement and dropping the boost back to 16psi from 19psi on the factory turbo the engine feels stronger than before

If you need diesel engines rebuilt, tuned or parts see Driveline first

Some more parts on the printer.

These parts have been no longer available for some time.

Another part to add to the catalog of parts to keep these older skis running.

Approx 15 hours to go before we can show you the finished product

Attention seadoo spark owners,

We are looking for a seadoo spark owner to test out our 3d printed hull washers, these are slightly thicker than the Seadoo original part number and should be more resistant to being squashed and also at a fraction of the price

Dm us today to be the test case

❄️ WINTER = BUILD SEASON ❄️

Marine slows down… race builds fire up.

Now’s the time for:

⚡ Motorsport wiring
🧠 Standalone ECU integration
🏁 Speedway & race car electrics
🔧 Performance diagnostics

Clean wiring. Reliable systems. Built to perform.

📍 Christchurch
Message us to lock in your winter build.

Engines, rewires etc, all go

R&D Friday, watch this space for what is hopefully a successful project for the automotive/electrical side of the business

🎄 Merry Christmas from RMB Performance 🎄
As the year comes to a close, we want to say a huge thank you to all our customers, friends, and supporters for backing RMB Performance this year.

From jetski servicing & repairs to automotive and race performance, we’re proud to do what we do and couldn’t do it without you.

We hope you all have a safe, relaxing Christmas and a New Year filled with speed, success, and smooth running engines 🚀
See you in the New Year!

— RMB Performance

🎄 Christmas & New Year Hours – RMB Watercraft & Performance 🎄

We’ll be open as normal until 5pm on Tuesday 23rd December, after which we’ll be away and closed for all statutory holidays.

Over the New Year break there will be limited availability, so if you’re needing work done, please give us a call to book and we’ll let you know if we can make something work.

⏰ Normal business hours resume Tuesday 6th January.

As a small family-run jetski business, just like many of you, we’ll be taking some time to enjoy the sun and water with our family ☀️🌊

We’d like to wish everyone a safe and happy Christmas and New Year break, and thank you all for your continued support throughout 2025.
We’re looking forward to 2026 and another great year on the water and race tracks!

— RMB Watercraft & Performance

Another Saturday, another speedway round.