Middleburn RS8 Crankset

3.75/5 (4 Reviews)
Weight : 406 grams

Product Description

  • Perfect for XC racing and trail riding.
  • 175mm length only.
  • 449g per pair including CD spider.
  • Available in ISIS or square-taper interfaces.
  • Weight (arms only): 175mm ISIS: 391g | 175mm Sq Taper: 406g
  • Available in 175mm Silver

  • Review Options:  Sorted by Latest Review | Sort by Best Rating

    Reviews 1 - 4 (4 Reviews Total)

    User Reviews

    Overall Rating:2
    Value Rating:2
    Submitted by finch2 a Cross Country Rider from australia

    Date Reviewed: October 5, 2010

    Strengths:    Looks OK, good selection of rings

    Weaknesses:    weak ISIS interface

    Bottom Line:   
    if it wasn't for the good selection of rings the RS8 would be a waste of money. The interface took no time to stretch to the point where I can feel slop in the joint when riding. It just falls off if I undo the bolts. Yes, I am aware of keeping bolts tight and did so as much as possible but it still happened. Very disapointed in shelling out decent money for something that hasn't lasted. No I don't do drops, just light xc riding.

    Expand full review >>

    Duration Product Used:   2 Years

    Purchased At:   crc

    Similar Products Used:   race face ride, shimano, campag road cranks

    Bike Setup:   Steel 29er with rohloff

    Overall Rating:3
    Value Rating:4
    Submitted by Wildeyes a Racer from Dallas,TX

    Date Reviewed: June 22, 2010

    Strengths:    Durability, wide range of options for gearing.

    Weaknesses:    Flexy.

    Bottom Line:   
    If using a double setup, these cranks are fine, and there are numerous options from Middleburn as to how you can set them up and customize your gearing. I have mine setup as a triple (22,32,42), and the crank arms flex an awful lot more than the RS7's. I also have a set of RS7's and have interchanged the two cranks on the same bike and discovered fast that the RS8 crankarms flex much more than the 7's and will cause a lot of chainring rub on the FD when powering in the large chainring both on the inside and outside metal of the FD. I am assuming this is due to the RS8's being lighter and having a slightly different design to the crank arms. My ratings might be low, but the availability of anything from Middleburn lately has been nonexistant with everything being out of stock for the last 6 months.

    Expand full review >>

    Favorite Trail:   Anything

    Duration Product Used:   More than 3 years

    Price Paid:    $250.00

    Purchased At:   CRC

    Similar Products Used:   RS7, XT M770

    Bike Setup:   Kona Kula Supreme custom build

    Overall Rating:5
    Value Rating:5
    Submitted by Jamie a Cross Country Rider from UK

    Date Reviewed: December 20, 2007

    Strengths:    Lightweight. Stiff. Still Available with square taper. Old School. Bling

    Weaknesses:    None

    Bottom Line:   
    Fantastic chainset, Still havent replaced slick shift chainreings and has been running for 2years. Will soon be changing it over to my Full Sus. Awesome Chainset

    Expand full review >>

    Favorite Trail:   Coedy Brenin

    Duration Product Used:   2 Years

    Price Paid:    $450.00

    Purchased At:   lbs

    Similar Products Used:   Truvative Carbon, Shimano XT and XTR

    Bike Setup:   Lightweight Giant XTC

    Overall Rating:5
    Value Rating:5
    Submitted by Teddy Pango a Weekend Warrior from PA, USA

    Date Reviewed: January 16, 2007

    Strengths:    Light, stiff, great warranty, unique in the USA, still available in square taper. You can get all sorts of spiders for single, duo, triple, and trials setups using the same crank arms.

    Weaknesses:    Expensive

    Bottom Line:   
    These are amazing cranks. I have the RS-8 arms with the duo (29/42) spider and I also have a set of RS-7 arms with the pro trials ring. The lifetime guarantee is reassuring. They are shaped so nicely that I never bang my ankles yet I get a great chainline. They are light (I saved 207g switching to these). They look incredible and there are hardly any people that you will run into with Middleburns in the USA. Pair them with a great square taper BB and you will have a combo for life.

    Expand full review >>

    Duration Product Used:   3 months

    Bike Setup:   Light XC hardtail, RS-8 square taper 175mm

    Reviews 1 - 4 (4 Reviews Total)

    Review Options:  Sorted by Latest Review | Sort by Best Rating

    Middleburn RS8 X-Type 100mmBB

    [url=http://activesport.co.uk/shop/article_198-001/]Home - activesport.co.uk 01298 22002 / 01298 22006 email sales@activesport.co.uk[/url] Middleburn-RS8-X-Type-Chainset-with-rings-Hardcoat-SlickShift-100mm-BB Middleburn RS8 X-Type 4 Arm Duo Chainset with rings Hardcoat SlickShift 100mm BB ... Read More »

    thinking of middleburn rs7 or rs8 cranks

    I know these things have been around for ever and are really good in terms of strength-to-weight ratio... However, after you add in the weight of the bottom bracket to the equation the scale doesn't really seem to favor this setup all that much. SKF BB are almost 300g! Are there any new light weig ... Read More »

    Any 200 lbs/91kg riders on Middleburn RS8 (flex issues)?

    Did my search and found very few reviews on the RS8 crankarm setup especially with heavier riders. I made a post a few days ago asking about the ISIS drive vs X-Type but it drifted off unanswered. This is more specific towards the RS8 and stiffness. I snagged a Crank Bros Cobalt Ti BB so I'm set on ... Read More »

    Middleburn RS8 X-type BB cranks?

    Has anyone got their mitts on a set? What do you think of them? I see them for sale at various UK distributers but haven't seen a detailed review yet. I messaged them a few days ago with a few pointed questions but still haven't heard back from them. Does anyone have inside information on whether or ... Read More »

    Middleburn RS7/RS8 ISIS & lightweight crank bolts

    I want to replace my steel crank bolts with something lighter. Due to availability I'm considering these (Extralite 12g): [IMG]http://www.extralite.com/imagesbike/xb5.jpg[/IMG] Now Middleburn states in the manual that only bolts with washers are to be used. Now I'm a little confused, can I use ... Read More »

    Read More »




    MTBR on Facebook