I can't see why a ramped/pinned chain ring would make any difference. Surely it's designed to help moving between the cogs when "you" decide to shift.
I coldest one of my Pomp frames to 135. Not a v4. Still going strong. Wasn't used for polo til I sold it to Newcastle Dave. Was coldest 5years ago.
I believe you can but you have to tak a dremmel to the sprocket to remove some lugs.
396 a2c 50mm offset. Kona p2 touring fork and surly long haul trucker fork both fit the bill if you want steel. Both have the blades drilled and tapped so much easier when it comes to fitting mudguards around the calliper.
The fork only comes in one length if bought separately. If you ain't got a pillar drill an engineer would only charge a few quid. A box of tea bags or packet of biscuits would more than likely get it done for nowt.
They also advised me not to cold set the rear to 135mm but that worked without any detrimental effect. (5 years on)
There's no reason not to drill the front to. I'd be inclined to take the fork off and use a pillar drill working from the rear to insure it's lined up.
Some .5 mm spacers with the standard chain ring bolts will get yer chain line as spot on if you're that concerned.
Try linking it to the on one pompino owners club thread
I'm using a surly hub with single speed one Side and standard iso disk other with absolutely no issues!
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