Razorblade 29 IV SL

Razorblade 29 IV SL

With the super-light (SL) version of the RAZORBLADE IV SIMPLON redefines the limits of what is technically possible. This is the ultra-light race machine. The entire geometry is perfectly balanced. It offers even more safety uphill, while downhill the RAZORBLADE lasers to top speeds. This is the answer for all speed freaks on the mountain.

€ 5,299.00
CHF 5,299.00
0 from 6
Cross Country
6 from 6
2 from 6
from 6
Winner by weight! The only easier way is on foot.
Weight assembled bike
from 7,9 kg
Frame material
100 mm
Wheel size
29 In
    Razorblade 29 IV SL
    Fully integrated cables

    Racers and summit climbers can look forward to a stylish and clean look. The fully internal cable routing not only ensures a sleek design but also protects the cables.

    Highly efficient acceleration

     The RAZORBLADE 29 IV SL is highly efficient when accelerating. The hardtail ensures maximum control both uphill and downhill.

    Frame protection

    How do you prevent rides in muddy terrain from turning into a mud bath? With the chainstay shield that is located on the inside of the chainstay of this MTB and protects the frame.

    No worries on long tours

    Short and crisp or long and challenging: The RAZORBLADE 29 IV SL impresses on every route. To make sure that riders don’t run out of water even on longer rides, up to two bottle cages can be mounted onto the Razorblade 29 IV.

    Adjustable seatpost

    During a tour or a competition: The adjustable seatpost ensures safety and fun on technically demanding descents.

    The brakes - true gems

    To improve braking performance especially on wet terrain, the RAZORBLADE SL comes equipped with Flat Mount Disc Brakes of the latest generation. They give you excellent control over the bike – no matter the weather conditions.


    The standout features of the RAZORBLADE 29 IV SL are its extremely low weight, the sporty riding position and the high-quality components. Visually, the ultra-lightweight hardtail bike impresses with its clean and uncluttered look thanks to a purist frame and fully integrated cables.


    Seating comfort

    Special tube shape in the area of the seat tube node allows vertical flex and thus pleasant seating comfort.


    With SIMPLON’s geometry table, you can find the right bike for your individual needs. Because one thing’s for sure: The geometry is a deciding factor in how your bike feels when you ride it!

    sr.Table Scrollable
    Razorblade 29 IV/SL XS S M L XL
    A Seat tube length 360 400 430 460 530
    B Top tube length 560 591 603 626 648
    C Head tube angle 68,5° 68,5° 68,5° 68,5° 68,5°
    D Seat tube angle 74,5° 74,5° 74,5° 74,5° 74,5°
    E Head tube length 86 92 97 108 119
    F Chainstay length 425 425 425 425 425
    G Wheelbase 1074 1106 1118 1142 1166
    H Bottom bracket drop 60 60 60 60 60
    I Fork length 506 506 506 506 506
    K Fork offset (rake) 44 44 44 44 44
    L Fork travel 100 100 100 100 100
    M Stand over height 765 792 812 832 882
    N Travel (Frame) 0 0 0 0 0
    S Stack 595 600 605 615 625
    R Reach 395 425 435 455 475
    STR 1,51 1,41 1,39 1,35 1,32

    All lengths in mm
    *STR: The higher the number, the more upright is the seating position.
    ** The Razorblade IV SL ist not available in frame size XL.

    Test Reports

    Tested by BIKE: the Razorblade 29 IV SL | SIMPLON

    The Razorblade 29 IV SL achieved great results in a test by BIKE magazine: The low frame weight was particularly impressive. Read the report now!

    Read more!

    Technical Details


    How does SIMPLON achieve weight advantages, controlled handling and many other benefits on the RAZORBLADE 29 IV SL? By using sophisticated SIMPLON technologies: EPS-moulded technology allows the frame to be made from a single core. The result: low weight and high frame stiffness. A robust build instead of rattling cables: On the RAZORBLADE 29 IV SL, the cables are integrated into the frame – more specifically, into the Smart Headset. The advantages when biking: a clean look and protected cables. Sporty or comfortable? The Comfort Concept allows for both: Filigree VIBREX® seat stays, a seat post with VIBREX® technology and a flattened top tube ensure optimal damping.
    The RAZORBLADE IV SL comes with the following technologies:


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