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A little late , but I have a NOS pipe in the UK .

The long rod works great in these bikes so no need to waste it - just make a 4mm spacer for under the barrel using the base gasket as a template. Billet cranks are sought after , and the seal area can be addressed with a speedisleeve . Someone will buy it if you aren’t going to https://www.bearingboys.co.uk/Speedi-Sleeves-Shaft-Repair/CR99098-24942…

I have a pair of new seal nuts for the Mulholland MX shocks which I think are the same . I’m in the UK but will ship PM for pics if you’re interested

Looks like a Bassani that’s had the tail end replaced with the spark arrester . Not a Hooker .. The exhaust manifold is larger on the MT , so use a CR manifold for the downpipe

They’re not a bad little bike , same steering angles , dimensions as the 74/5 CR125 but heavier. Steel frame, steering stem and swingarm unlike the chromoly of the CR Pistons and rods are hard to come by . re-mx stocks 1 size piston only . Crank works can fit a KDX rod I believe Much milder than the CR...

I used flexible tube

I used thin wall clear tubing of the right size .. can’t recall the size now. Happened to have some overflow pipe / hose from a small dehumidifier that was perfect. It’s a stretch to call it a check valve