Does anybody know the source of de-air valves? They are screwed onto the valve stems and bleed the tires down to a pre-set pressure? I've seen them advertised but I don't remember where.

Thanks.

There are 2 brands. I have these but have yet to use them. I 'think' these need to be set to the PSI you want and if I remember correct they are easy to un-set by mistake by twisting the ends.

Call the guys at Power Tank to be sure.

http://powertank.com/Merchant2/merchant.mv?Screen=PROD&Store_Code=PTOS&Product_Code=KIT-8120&Category_Code=ACC

Thanks Mike.