Sram-Truvativ DUB Bottom Bracket | BB-DUB-BSA-A1

The bottom brackets for the DUB MTB Wide cranksets from Sram and Truvativ. The DUB bottom brackets are specifically designed for 29 mm axle diameters and are not compatible with other cranksets. Equipped with high-quality industrial bearings and excellent seals, the DUB bottom brackets ensure long-lasting, worry-free cycling.

Sram Dub Wide MTB Bottom Bracket

The Dub Wide MTB bottom brackets differ from standard Dub bottom brackets only in the spacers supplied. These are designed for the 3 mm longer Dub Wide crank axles.

SRAM Truvativ DUB Wide Technical Specifications:

• Application: MTB
• Bearing cups: CNC-machined aluminium, outer diameter 44 mm
• Bearings: Sealed stainless steel industrial bearings
• Chainline: 55 mm
• Bottom bracket shell size: BSA 68/73 mm 1.37
• Compatible with 68 and 73 mm BSA bottom bracket shells; E-type derailleur mounting also possible.
• Easy installation and adjustment

Included:

Sram Dub BSA bottom bracket, 1 x 3 mm spacer (left), 1 x 7.5 mm spacer (right), 2 x 2.5 mm spacers for 68 mm bottom bracket

Matching 44 mm bottom bracket spanner:

• Race Face Part No: 23D30146
• Cyclus 7202712

BSA threaded bottom bracket cups

The BSA bottom bracket shells have a width of 68–73 mm and a thread of 1.370 × 24 TPI, with an outer diameter of 34 mm, into which the bearing cups are screwed. Both bearing cups are screwed in the direction of travel. Adjustment to the different shell widths is achieved using the washers included in the delivery.

Sram DUB crank axles 28.99 mm:

SRAM has developed its own axle standard for DUB cranks. SRAM DUB cranks have an axle diameter of 28.99 mm and are only compatible with bottom brackets designed for DUB cranks. The MTB DUB cranks have a longer axle (112 mm) than the road bike DUB cranks (106 mm). This means that MTB cranks can also be fitted to frames with wider bottom bracket shells. There are also Wide Road and Wide MTB cranks. These axles are also longer than standard axles, although the Road Wide axle, at 112 mm, corresponds to the standard MTB axle.

Standard MTB cranks and Boost MTB cranks have the same axle length, 112 mm. The MTB Wide cranks have a 118 mm axle and the Super Boost+ cranks a 121 mm axle, and each requires different bottom brackets or additional spacers.

Herstellerinformation: SRAM, 1000 W Fulton Market #4, 60607 Chicago, Illinois, United States, http://www.sram.com | Contact EU: SRAM Europe Sales and Services B.V., Paasbosweg 16, 3862 ZS Nijkerk, Netherlands, https://www.sram.com