SKU: 60457364474

T47 TRAC Internal

Sale price$94.49 Regular price$104.99
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Ships within 48 hours · Estimated delivery Jul 13 - Jul 18

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Description

T47 TRAC InternalTRAC stands for 'Twin Row Angular Contact', and this is exactly the type of bearing you'll find inside the shell of this T47 unit. Instead of a conventional, single row cartridge bearing, we decided to fit out our TRAC unit with bearing cartridges containing two rows of bearings, more evenly distributing the forces generated by the rider's weight, and when pedalling on rough surfaces. This system has huge benefits on bottom bracket longevity, and also

TRAC stands for 'Twin Row Angular Contact', and this is exactly the type of bearing you'll find inside the shell of this T47 unit. Instead of a conventional, single row cartridge bearing, we decided to fit out our TRAC unit with bearing cartridges containing two rows of bearings, more evenly distributing the forces generated by the rider's weight, and when pedalling on rough surfaces. This system has huge benefits on bottom bracket longevity, and also increases pedalling efficiency by improving the overall stiffness of the crankset-bottom bracket interface.

The TRAC bottom bracket system comes ready for use with a 30mm crank axle, but it can be easily converted for use with other axle sizes. Seido offers adapter kits that enable the use of 29mm, 24mm and 24/ 22mm axle daimeter configurations. Finding spare bearings for the unit is also made much easier - they are also available at our webstore. No more headache from convoluted processes when trying to figure out bearing specs.

The T47 interface has many benefits, from allowing more space in the area to facilitate internal cable routing, to the greater ease of maintenance when compared to other BB standards.

This is the Internal version of the TRAC Bottom Bracket, suited to wider BB shells, from 85.5mm to 92.5mm. Click here to see the external version.  

In the Summer of 2025, we took a deep dive into the subject of T47 bottom brackets, with our dedicated T47 blog post. Take a look at the blog section of our webstore to check out some of our other articles and interviews too. 

COLOUR
Black

CUP MATERIAL
Aluminum

SPINDLE SIZE (mm)
30 mm

SUITABLE BB SHELL WIDTH (mm)
85.5 / 92.5 mm

TYPE
Internal

TOOL INTERFACE
T47 52-16 Tool

BEARINGS
3806, 30 x 42 x 10 mm

EXTRA INFO
Adaptable to 29, 24 and 24 / 22 mm with our TRAC spindle adapters

Twin Row Angular Contact Bearing

Includes 2 x 2 mm, 4 x 0.5 mm washer and 1 x wave washer

WEIGHT
130 g

Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 60457364474

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San Leandro, US
★★★★★ 5
Amazing jeans! My daughter loves them!
Size: 7 Slim, Color: Washed Blue, Size: 7 Slim, Color: Washed Blue
My daughter is really slim but tall. She is 7 about 50 pounds. She loves them and I’m so happy because all the other jeans that I buy I have to return cuz they are all too big on her. The jeans are stretchy and feel much more expensive for the price! Great quality! I will be ordering more for sure!
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Beats Name Brands Jeans 👖
Size: 14, Color: Washed Blue
These pants are good for $12.78 you can’t beat that only thing is the legs are a bit too long. Good quality jeans beats name Brand jeans that’s why I gave 4 stars not five stars she will grow in to them.
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Boise, US
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Size: 14 Slim, Color: Washed Blue
My girl absolutely loves the jeans!!!! I sized up for her just incase and I’m glad I did because they fit her perfectly!!!!!!!! I sized up for her height! Perfect length!!!! Great quality!!!! Great price!!!! Jeans look just like they are pictured online!
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Felicia
Bozeman, US
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Cute jeans
Size: 12, Color: Washed Blue, Size: 12, Color: Washed Blue
Bought these jeans for my daughter and they fit great! The material is thick, which is nice even in warm weather. They look just like the photo and have a great length to them. Very comfortable and stretchy . She loves them!
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Teri PD
Bozeman, US
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FANTASTIC FIT
Size: 16 Plus, Color: Washed Blue
I'm a 4'7" , 65 year old woman. Due to abdominal issues I needed jeans that give that extra something on the waist. I've tried on just about every brand of jeans ranging in size from adult/junior 6 to 12. If they fit on the legs the waist was huge. If they fit on the waist the legs and butt had enough room for me and a friend. I was resigned to wearing yoga pants and leggings with big shirts. My son mentioned that he loved the Amazon basics men's dress slacks, so I figured why not. First I looked at women's and juniors, and I knew from the measurements that I was still stuck. Then I remembered that about 15 years ago I'd buy girls pants (I was a size 12 in kids at the time) Looking at the sizes I knew a 12 was way too small, then I saw the 16 plus. With hesitation I bought them. Well glory be miss Agnes, THEY FIT. Comfortable, real jeans again. Sure, I have to take them up about 6 inches, but that's fine, not a problem. I'm just so happy to have real jeans again !!!
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Reviewed in the United States on November 30, 2023

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