Lugged BB shell for oversized 1" or 1-1/8" frame

Lugged BB shell for Oversized 1" or 1-1/8" frame - 30x17 oval chainstays


Regular price $ 31.95 Save $ -31.95

1 in stock

sku # J146B

Lugged BB shell for oversized 1" or 1-1/8" frames - 28.6 seat tube, 31.8 downtube and 30x17 oval chainstays. Steel.

68mm wide, ISO

Downtube/Seat tube angle = 60.5°
Seat tube/chainstays angle = 62°
Angle between chainstays = 14° (7° on center)

179g. - Weight is based on a representative sample. Actual weight may vary slightly. Imported.

We carry lugs that fall into three of the four most commonly built types. These are all road oriented lugs, but hey, there aren't any lug police out there, so do what you want. Two of these types work with 1" steerer tubes and two work with 1-1/8" steerers. The terms: standard, oversize (OS), and double oversize refer to the tubing diameter that the lugs will accept. The larger the diameter the tube, the stiffer the tube, and the stiffer the tube, the stiffer the frame. In general if you're building for a cyclist of average build, you can safely go with 1" standard or OS. If the rider is taller and/or heavier, you might want to go with the 1" oversize, or 1-1/8" oversize. If the bike will be used for touring, oversize tubes might be a wise choice. 1-1/8" double oversize lugs go with even bigger tubes. We don't currently carry double oversize lugs.

In these illustrations the main triangle tubes are light blue and the lugs are darker blue. Each lug joins at least 2 tubes, with the BB shell accommodating 4 tubes: a downtube, seat tube, and 2 chainstays. The chainstay size further complicates matters with the BB shell accepting 22.2mm round chainstays or a variety of oval chainstays. Obviously you'll want to make sure that your chainstay diameter and shape matches with the chainstay socket portion of your BB shell.


Shipping for spray paint is only available in the contiguous US and must ship by ground. If it is purchased along with other items, the entire order will ship via ground. If you want your other items faster, please order them separately.

We ship most of our packages Priority USPS with tracking. For orders with a shipping weight under a pound, we offer 1st Class Package shipping with tracking.

We send out packages M-F, except for federal holidays when USPS doesn't ship. If we receive your order before noon (Pacific time) M-F (Thursdays ship at 9am), it will likely go out that day.

We are now shipping to Canada! This is new for us and we're refining our automated system as we go. We will refund any excess shipping charges.

Packaging materials - With some exceptions, we only purchase paper packing materials. They're a renewable and recyclable resource and we like that. But we do reuse plastic/foam packaging material that we ourselves receive in our own orders.

If an item is damaged or has been sent in error, we will replace it and pay for return shipping if item is returned within 30 days of time of purchase. If you ordered the wrong item or changed your mind, you can return it within 30 days of time of purchase and be refunded the purchase price minus a 10% restocking fee.