
Bikone DCTech bottom bracket T47 External
Tax included.
Description
DCTech T47 External bottom bracket for SRAM DUB
The DCTech T47 External bottom bracket is designed for riders who demand the highest levels of performance and durability – whether on challenging MTB trails or long road tours. Thanks to the innovative Dual Cup Technology (DC Tech) and high-quality steel ball bearings, you'll experience a particularly smooth ride without any annoying noise or movement.
Highlights:
- Dual Cup Technology: Perfect alignment of the bearings on both sides – for maximum stability and smooth running
- High-quality steel ball bearings (ABEC5/P5 – 2RS): Durable and reliable even under the toughest conditions
- 7075 aluminum cups: aerospace quality, T6-hardened – robust, wear-resistant and permanently precise
- Fully sealed: protection against water, dust and dirt for a long service life
- An adapter kit is required for DUB Wide cranks.
Technical data:
- Variants
- 29 mm (SRAM DUB)
- 30mm (rotor and much more)
- 24mm (Shimano)
- Frame width: 68–73 mm
- Frame diameter: T47 (thread)
- Weight: approx. 140 g
👉 The DCTech T47 External is the ideal choice for anyone looking for a quiet, durable and smooth bottom bracket for SRAM DUB drivetrains – whether on or off-road.

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Frequently asked Questions?
You can find the most frequently asked questions from our customers and our answers here. If you still have any questions, we look forward to personal contact and to using our expertise to help.
We are available Monday, Wednesday to Friday from 1:00 p.m. to 7:00 p.m. and Saturday from 11:00 a.m. to 4:00 p.m.
On Tuesdays we treat ourselves to a day off.
Contact SMParts. team
Email: info@sm-parts.net
Tel: +49 911/89351277
or get advice via WhatsApp
How long does it take for my order to ship?
Within Germany usually 1-3 days. We try to ship all orders as quickly as possible
possible to ship. If there are delays, we will of course contact you.
How can I pay?
In SMParts. You can pay for the online shop with PayPal, bank transfer, credit card (Visa and MasterCard) and Klarna (immediate transfer, direct debit, installment payment and invoice).
How can I return my items if they don't fit?
You can return any items you don't like within the 14-day return period. The best way to do this is to use this returns form.
How can I track my order?
Immediately after your order has been shipped, you will receive a shipping confirmation including a link for tracking the shipment.