• Decat-ing a bike, is it road legal after?
    And should I tell my insurance?

    Tempted to replace the exhaust in the TransAlp and the LeoVince pipe and can shave several kilos off the stock kit (10+ kg) and add a couple of HP.

    Also, what's good for loosening seized/ rusted bolts on an exhaust?

  • Afaik it’s not road legal, but so long as the can doesn’t say “not for road use” then you can claim ignorance. Don’t tell the insurer, claim ignorance (do they know what it had on when you bought it??)

    Heat and cool the area, spray penetrating lubricant, heat and cool x10. That was the advice in case my header studs were seized. Fortunately they weren’t.

  • Bikes aren't emissions tested so I can't see how it would change road legality. As long as it doesn't end up over a legal decibel level.

  • Decating bike may need some ECU work as it may confuse the ECU.

    Look up plus gas.

  • Plus gas is easiest to get in uk (wilko soemtimes sell it), but have found "kroil" is very effective. Suspect its just acetone and atf (pb blaster) and it stinks, but so far have yet to find a bolt that it hasn't at least helped it come out.
    But patience and prep is your friend, exhauand manifold bolts are often a pita. Scrape as much crusty bits in that might stop the bolt turning, wire brush or wheel it, oil it over a few days, heat it if needed, shock it, consider using an impact screwdriver or impact wrench, have found a quality impact wrench (got a super powerful facom impact which tbh paid for itself in its first few days of use) loosens bolts with much less chance of rounding or snapping

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