Bottom bracket shells - T47 threaded - 69mm, 74mm - 50.8mm OD
Bottom bracket shells - T47 threaded - 69mm, 74mm - 50.8mm OD

Bottom bracket shells - T47 threaded - 69mm, 74mm - 50.8mm OD


Regular price$ 11.95


sku # BBS-T47-69, BBS-T47-74

Made from 4130 steel, these lightweight 50.8mm (outer diameter) T47 threaded bottom bracket shells are available in 69mm and 74mm with the extra 1mm of width ensuring sufficient material for facing both sides. At the end of the facing process, they will then be 68mm and 73mm respectively. Drive side (left hand thread) can be identified by the slight gap/recess on the drive side before the threads begin. 16mm thread depth on each side.

Right and left threaded M47 x 1.0

69mm - 149g
74mm - 160g

Weights are based on representative samples. Actual weights may vary slightly. Imported.

Orders received by the following times (Pacific time) will likely go out that day.

Monday - 9am

Tuesday, Thursday - 10am

Wednesday, Friday - Noon

Orders ship Monday through Friday.

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 and select another shipping option.



"I just remembered something! Can you add it to my order?"

We don't have access to your payment info, so we can't add items to your order.

If you realize that you forgot an item after placing an order, just place another order for the missing item(s) and shoot us an email at to call our attention to it. As a rule, when we encounter multiple orders to the same customer, we will combine the orders and refund you any excess shipping from the additional orders. Please do not select free "local pickup" for the second order, otherwise we may need to invoice you for any additional shipping costs and that just slows things down.

"I got a USPS delivery notification but my order hasn't shown up!"

It isn't uncommon to receive USPS delivery notifications before a package is actually delivered. We're not sure if they sometimes scan the package at the post office before delivery, but typically the package shows up within 24 hours. Please let us know if the package hasn't shown up by the typical USPS delivery time the next day and we'll get it all sorted out.

If an item is damaged or has been sent in error, we will pay for return shipping and replace the item if it is returned within 30 days purchase.

If you ordered the wrong item or changed your mind, you may return the item provided that it is in new condition and within 30 days of purchase. You will be refunded the purchase price minus a 10% restocking fee. The restocking fee does not apply to exchanges.

Please understand that we are not responsible for insuring compatibility of parts in an order. Builders frequently order items for different bikes and there is no way for us to know which parts are intended to go with which parts.