I have a Dr.Q hrd the cylinder and is in great condition.( made a mistake when I first posted the add I will measure the cylinder tonight) All it will need is  a new set of rings. The cylinder  comes with  a cool head that has been cut by Q too and vfoce reeds with spacer. This cylinder will have the power valve too. This has been the best cylinder I have ever run. This cylinder has great torque great top end great mid range. Been hill climbing for years I used to run a 87 big reed and I decided to get a Q HRD cyclinder form Q and it was a night and day difference.     I am asking for 750 for the top-end.   I also will be selling my cases $300 the cases have the brass insert already done will need main bearings  clutch basket  150. tranny sold The only reasons I am letting my Dr.Q HRD cylinder go down the road is finance problems.

Sorry I forgot to say that the cases have been machined to fit a z400 bolt but all that is needed is a sleeve to make the zilla bolt fit again.
I also have vforce reeds for an 87 zilla, asking $80 & will come the intake boot and spacer.
 I have lighted flywheels. Big rivet for $75.00 and 75.00 for a small rivet. I have a good seat I would like to sell for $50.00. I have stack of rear sprockets for $80. Most of them are from sprocket specialist. Pricing does not include shipping.

Pics of the cylinder