This was a few little jobs on a Kawasaki KLR650.

• A new muffler for a bit more power and sound (the factory one sounds a bit like a lawnmower)
• An upgraded jet kit for the carburettor, to keep the engine in tune with the new exhaust
• and a replacement braided brake line for the front brakes - which improves the braking feel.

The exhaust was a Supertrapp branded one, which is not very common in Australia, but I’ve seen them used on older race cars. They have a unique adjustable baffle setup so you can tune the sound and power a bit.

It went on easily, and takes up a lot less space than the massive factory setup!

Next was the brake line, which was just a simple bolt on job followed by flushing the brake fluid and bleeding the air out. The brake lever feel was improved greatly!

The final job was the new jets for the carby, which actually went together pretty easily apart from the carby being fairly difficult to remove from the bike as it is held in rubber hoses at each end which don’t have much room to move.

Years ago I’d installed an aftermarket exhaust on this 350Z, but it was deemed to be “not loud enough”

The owner had since bought a BuddyClub exhaust, which has larger pipes and very little muffling.

Installing it was a pretty simple job, apart from having to replace all the bolts (about 20 of them in the exhaust system!)

Needless to say, it’s loud enough now!

Mazda MX5 turbos have a rubber pipe connecting the intercooler outlet to the throttle body.

It’s normally fine, but if you increase the boost it has a habit of blowing up like a balloon and / or splitting the rubber.

Unfortunately there are two other pipes and an air temp sensor mounted on this rubber section - and it changes in diameter from 50mm at the inlet to 65mm at the outlet!

I used a 2.5″ (65mm) 90° mandrel bend, and cut slots in one end so I could reduce it down to 50mm and weld it up again.

Fortunately each of the pipes and the sensor on the original pipe were joined using steel fittings, so I was able to weld those into the new metal elbow and have it all plug in as normal.

The only extra bit needed was some rubber hose to connect between the new pipe and the throttle body.

It ended up looking very factory I think