• Opening Hours.
    Mon: 9.00am to 5.00pm (UK)
  • United Kingdom.
    01772 32 33 33
  • International.
    0044 1772 32 33 33

RockMan Lite Cranks

Product code: 10940

£58.33RRP: £65.83(Save 11%)

Check Stock

RockMan Lite Cranks

160mm, Silver
165mm, Black
165mm, Silver
170mm, Silver
175mm, Black

Sold out

- ISIS cranks from Rockman, forged and then CNC machined from high quality aluminium alloy.
- Fits all ISIS bottom brackets.
- Threaded to accept a front freewheel or screw-on fixed sprocket.
- Wide threaded section on 175mm length cranks allows a bashguard to be used as well as a freewheel or screw on sprocket. Please note: It is not possible to fit a bashring and freewheel to the 160mm or 165mm cranks.
- Super light yet still stiff and strong enough for competition use.
- Not suitable for use on street trials bikes due to their low weight.
- Tough anodised matt finish, with raised silver Rockman logo.
- 160mm, 165mm and 175mm lengths available.
- Weight: 425g (160mm length), 445g (175mm length)
- Offset: 33mm

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.



Do I have to use the specific crank bolts with these? Or could I use some echo ones? Thanks.

Posted by Theo on 03/03/2011

Reply from TartyBikes on 03/03/2011

Hi Theo - The type of bolt you need to use depends on your BB rather than the cranks themselves. If you're using a BB with an M15 spindle then using aluminium crank bolts like the Echo SLs would be no problem. The cranks themselvs shouldn't be an issue with any bolt. Thanks, Mark


Do these cranks require a specific type of freewheel? I have read only Monty, Try-All and Rockman freewheels will fit. Is this accurate?

Posted by Patrick on 03/08/2011

Reply from TartyBikes on 04/08/2011

Hi Patrick - Any freewheel with a standard thread should fit, so not a 'microdrive' or LHD freewheel. All the freewheels we have on our website should fit these cranks fine. Thanks, Mark


marry cristmass, cool guys from tarty. I'm new in trials world, and have 2 questions: what does it means:'left hand only' - in the "RockMan Lite Cranks 175mm, Silver, LEFT HAND ONLY"??? (if it's a pair - what's the difference betwwen "lefty" or "righty"...? second question: would if fit onza comp? thanks in advance, odi

Posted by odi on 26/12/2015

Reply from TartyBikes on 29/12/2015

Hi Odi - Merry Christmas to you too! The "Left Hand Only" means that it's only the left hand crank supplied, rather than a pair. The left side crank is specifically threaded to accept a left hand pedal, and the right side crank is specifically threaded to accept a right hand pedal (as well as a screw-on freewheel or sprocket). The "Pair" option should fit your Comp fine though, your pedals and freewheel should transfer across fine. Thanks, Mark


Write a review


Based on 1 customer rating


very good cranks !

Posted by Guy on 13/12/2010

it gives very wide position standing which gives more stability. doesn't get scratched that easy - long lasing.

People who bought this also bought…

Try-All 7075 Snail Cams

Product code: 12035

From £12.00 to £14.00


From £12.00 to £14.00

From £12.00 to £14.00

Check Stock Check Stock

View options

Check Stock

Check Stock

RockMan Foam

Product code: 10207




Check Stock

Check Stock

#Hashtagg Ultralight K810 SL

Product code: 12479




4 colours available


4 colours available


On order On order

Stock reminder

On order

On order

  • © TartyBikes Ltd, 2018
  • Tel. (UK). 01772 32 33 33
  • Tel. (Intl). 0044 1772 32 33 33

TartyBikes Ltd, Units 3-4, Club Street, Bamber Bridge, Preston, PR5 6FN

  • Company No. 6131482
  • VAT. GB 860 0270 59

All prices listed are inclusive of sales tax at the correct rate for your country

Web Design & Development by Cox Web Design, Loughborough