Thorn Tandem Crankset for X-Over Drive - Front - Black

Customer Reviews (2)
5 / 5| Write your review
£49.99 Please note this product has selling restrictions to your country. was
Manufacturer : 
SJS Cycles part number : 
Manufacturer part number : 
- Left hand 104mm BCD crank
- Right hand crank without spider
- Alloy
- For front tandem use
- Square taper
Product Reviews (2)
Questions & Answers (2) Q & A
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Product Reviews (2)
Overall Product Rating 5 / 5
Good product for mid-motor on Tandem
By Cengiz
23 May 2021
5 / 5
I recommend this product
ConsShipping cost from UK to Switzerland was almost same as the product cost!
I installed them with Bafang BBS02B 500W mid-motor to a Racer 3000T Aluminum frame Tandem. I had to remove back Truvativ ISIS bottom bracket and crank-set.

Would be nice if:
1. the bottom-bracket mounting holes were in diamond-shape.
2. 20mm offset option on the left-crankarm with spider.

For the 2. problem, I ordered a pair of 20mm Bicycle Pedal Extenders from Aliexpress, waiting for them. I will install only the left one to compensate right-crankarm's offset issue...
Useful to install a mid motor on a tandem
By Clouclou64
15 Apr 2021
5 / 5
I recommend this product
It will be helpful to have an option for rigth arm with 20mm less offset. Impossible to find with square hole at 0 degrés.
Questions & Answers (2)
What would be the length of the bottom bracket ?
29 Oct 2020
This very much depends on your frame, the OLD for the rear hub and the chainline you wish to achieve.

JK 29.10.20
1 x 9 single speed?
22 Jan 2019
Can I use this as the basis for a 1 x 9 single speed 104 b/pcd on MTB with 68mm English threaded BB please?
This one is for tandem. The chainring is on the left.
Hope that helps.