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Trialtech SL Forged ISIS

Product code: 12111


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Trialtech SL Forged ISIS


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Free Trialtech bashring with any pair of SL Cranks!

Supplied with a free Trialtech Sport Bashring

- New for 2013 after several years of testing and development, the Trialtech SL Forged ISIS cranks!
- Developed with Trialtech's full team (including riders as diverse as Kenny Belaey, TRA and Neil Tunnicliffe), as well as our own team riders Stan Shaw, Cap and Flipp.
- Forged from high quality 7050 aluminium alloy to give great strength and stiffness.
- Unique crank profile is custom designed to make the cranks as strong as possible, with recesses in the rear of the arm to help reduce weight.
- A deeper BB interface on the crank arm allows the cranks to have a reduced Q-factor, whilst still providing a good amount of offset - this reduces flex compared to other cranks on the market. The non-drive crank arm is also shaped to match the Trialtech SL BB axle spacer perfectly!
- 1.37" threaded section for freewheels or screw-on sprockets is nice and wide, allowing the use of a bashring without compromising thread contact.
- Tough matte anodised silver finish is complimented nicely by black 'SL' graphics (which match the graphics used on the rest of the SL range).
- Available in 165mm, 170mm and 175mm lengths.
- Weight: 438.8g (165mm), 451.7g (170mm), 458.5g (175mm)

- Offset: Left - 31.5mm, Right - 32.5mm

Additional Information

Ensure that your pedals are tightened to at least 310 in-lbs (35 Nm) every 5 minutes for the first few rides. Before fitting, it's also a good idea to make sure your pedal axles are clean (a wire brush works well) then greased before installation.
Similarly, always check crank bolt torque is at least 310 in-lbs (35 Nm) every 5 minutes for the first few rides, then each and every ride after that.
Failure to keep your pedals or crank bolts tight as described above is likely damage your cranks and this will not be covered under warranty.

Please note that the minimum required thread contact between crank arm and sprocket/freewheel is 7mm, and a 1.37" sprocket/freewheel with maximum internal thread diameter 33.80mm (NOT 1.375") must be used. Failure to adhere to this instruction will damage the cranks threads and this is not covered under warranty.

Please note: due to the manufacturing processes used for these cranks, there may be small variations in concentricity between the freewheel and bottom bracket interfaces. This can lead to a certain amount of run out for any freewheel, sprocket or adaptor installed on the crank arm. While this isn't an issue on trials bikes, for applications requiring much higher tolerances we cannot guarantee they will be suitable. Please get in touch if you have any questions.


There are currently no questions relating to this product.


Write a review


Based on 1 customer rating


The best trials cranks I've ever used..

Posted by Bobby-TheDemolitionMAN

I began running AC Cranks that came on my first modified GT bike and I ended up breaking those.Riding with so many BMXers, they were all about profile cranks and so I began to run those and the weight was a bit munch and looked around for other cranks. I came across Trialtech SL years ago, began running them and I haven't looked back since.I was a bit skeptical of these cranks, that I was going to snap them in a month of riding and to my surprise they've held up.I've put these cranks through the mill, from riding at home and getting salt in them, to riding in Boston and taking the urban pounding there as well. I run these cranks on almost all my trials bikes and I've never broken one, bent the arms or stripped them out. If you're serious about trials and believe in longevity, then these cranks are for you. TheDMAN

Reply from TartyBikes

Hi Bobby!
We're big fans of these cranks too, and it's great to hear they've lasted so well for you.
Thanks for the review!

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  • Tel. (UK). 01772 32 33 33
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