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70.4mm piston source.
Posted: Wed Apr 24, 2013 3:02 pm
by Captain Chaos
I'm looking to buy a decent quality 225 piston at 70.4mm dia.
Preferably with a full length skirt and thin rings.
Does anyone have any recommendations?
I'm thinking £50 - £60 rather than asso type money as it's for a temporary fix.
So far i've look at the thin ring piston on beedspeed for £49.99, but are there any other options?
It's gotta fit a standard lambretta crank rod combination. 58/107.
Thanks
Re: 70.4mm piston source.
Posted: Wed Apr 24, 2013 4:51 pm
by Adam_Winstone
Mahle thin ring Asso copy (but better!) from AF.
Re: 70.4mm piston source.
Posted: Thu Apr 25, 2013 8:10 am
by Captain Chaos
thanks Adam
I have a sneaky suspicion that the one from beedspeed is a mahle too....
I will ask them today.
Re: 70.4mm piston source.
Posted: Thu Apr 25, 2013 11:58 am
by Captain Chaos
so far i've been informed it's of "indian origin"
i've asked them to confirm it is mahle.

Re: 70.4mm piston source.
Posted: Thu Apr 25, 2013 12:11 pm
by Captain Chaos
only asso at 70.4 at rayspeed (£90 plus carriage)
fingers crossed that the beedspeed one is a mahle....
Re: 70.4mm piston source.
Posted: Thu Apr 06, 2017 5:44 pm
by Adam_Winstone
How did you get on with this hunt?
A pal of mine is also after a 70.4mm piston and I sent him AF's way too but they are now saying that they're out of the Mahle and other options too. There seems to be a real lack of availability for decent pistons at a decent price, which is exactly what the Mahle/Escort thin ring was
Adam
Re: 70.4mm piston source.
Posted: Thu Apr 06, 2017 6:54 pm
by bristolmod
I've got an unused GPM 70.4 (thick ringed x2) in the garage that going FOC apart from the postage if anyone wants it? If you're local to Bristol please collect it.
Chris
Re: 70.4mm piston source.
Posted: Thu Apr 06, 2017 7:08 pm
by Adam_Winstone
^... Chris, what a great offer, thanks.
As it stands, my pal has a used but serviceable GPM (thick ring) in it at the mo' but he's looking to replace it with a thin ring item. I'll pass on your great offer and let him decide.
Cheers
Adam
Re: 70.4mm piston source.
Posted: Thu Apr 06, 2017 7:19 pm
by Scooterdude
If you visit the Mitaka site they list Pistons for everything and show all the dimensions (crown height etc) so you can work out what you want from there.
Re: 70.4mm piston source.
Posted: Fri Apr 07, 2017 12:33 am
by shamrockexpress
bristolmod wrote:I've got an unused GPM 70.4 (thick ringed x2) in the garage that going FOC apart from the postage if anyone wants it? If you're local to Bristol please collect it.
Chris
Well done that man a bit of generosity can only be good for the fellowship of scooterotica...............shame the postage is £75,,lol
