Origin8 Compact Doubles

140, 150, 155, or 160mm

Ordering, Payment, Shipping and Contact info.
Outstate MN residents add 6.875% sales tax.
Metro residents add 7.775% sales tax
The importer seems to have stopped bringing in 150s but I have Sinz 150s.

Shown w/34-50 FSA Chainrings - $132.50
 Some other options;

34-48 FSA Chainrings - $131.00 (Ramped and pinned)
34-50 FSA Chainrings - $132.50 (Ramped and pinned)
38-52 FSA Chainrings - $132.50 (Ramped and pinned)
(36 and 38t inner rings available at the same price)

Prices include arms, rings and chainring bolts.
Add $5 if you need crank fixing bolts.

Do not send money, based on these prices.

Due to fluctuating exchange rates, my parts costs can vary at any time. And, my suppliers are often out of at least some specific rings. Chainring prices vary widely, depending on brand and size.

Contact me mark@bikesmithdesign.com or 612-824-2372, for a current quote and availability.
Origin8 single w/guards
Single Stainless Surly Chainring w/double Salsa guards. 
For use with internal geared hubs
Fashion warning!
The 140s and 160s look normal. But since the same forging is used for 150, 155, 160 & 165s the ends of the 150s (left) and 155s look a bit odd, with extra metal past the pedal hole.

I can remove the excess metal and put a matte finish on the end for $25 (right).  Saves a little weight too.
BB length; These arms take a 107 or 110mm square bottom bracket spindle if used as a single or double.   And a 115 or 118mm spindle if used as a triple. If you currently have something close, I recommend giving it a try. If it doesn't work you should be able to pick up the right one at most larger bike shops.

If you need a new Bottom Bracket;
For standard bike parts, it's always best to support your local shops. You need them to stay in business.  Because when you need something on Saturday, for a ride on Sunday, no mail order place is going to help you.

But if the closest thing you have to a local bike shop is WalMart, I can provide 320 gram Shimano UN-54 BB cartridges for $27.
Or  108mm 171 g., 3 cartridge bearing, Sinz Pro Titanium BBs for $125.
And inexpensive tools to install them.

 Bolt Circle Diameter (BCD) 110mm

110mm BCD rings are available in even tooth counts from 34 to 54, plus 39 and 53.  Rings are spaced for 8 or 9 speed chain.

A good application for a 34-44-54 triple would be a bike with a 20" drive wheel. Such as replacing the 170mm 39-52-63t crank setup on a Rans Rocket or Tailwind.
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