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    A Radically
    Original Composition

    STRATOS CF SX
    Hardtail | Cross Country | Carbon | 29" | 100/100mm Travel | 12.5kg
    €2.999,00

    Price incl. VAT excl. Local Import Taxes & Shipping Costs.

    Size
      EmptyDrop

      KEY FEATURES

      • Silverback Asymmetric Stratos Frame, UD CF, Flex Stays, Oversize Pivots. BOOST
      • Rockshox Recon Silver fork, 100mm Travel, Lockout, Boost
      • Rockshox shock, Stratos tuned
      • BURST Flex suspension platform
      • SRAM SX Eagle rear derailleur
      • Surface custom wheelset
      • Maxxis Rekon Race 29" x 2.25" Tubeless Ready tyres
      • Shimano MT-200 brakes
      • Weight: 12.5kg
      • OVERVIEW
      • WHY IT'S BEST
      • SPECIFICATIONS
      • GEOMETRY & SIZING
      • REVIEW & FAQ
      • DOWNLOAD PDF
      • THE PRIVATEER'S CHOICE RACE BIKE.

        Bred for the most demanding XC courses the world over, the Stratos was designed from the ground up to trounce any terrain. Asymmetric design dissipates load based on magnitude and position, levitating stresses where it's most concentrated. Paired with 12-Speed X01 Eagle, 100mm Fox 32 Performance SC, and Surface Carbon wheels, it sets the scene for serious racing. CF1 is the perfect privateer race bike. Oversized tapered pivot and Burst Flex suspension makes for a stiff, responsive, extremely light and agile race bike. Dropper post compatibility for versatility, nothing will be in the way of your success on-board a Stratos.

        BOXED ASYMMETRIC FORCE DISSIPATION

        By reducing peak stresses at points in the frame, the entire bike can be constructed lighter. On a full suspension bike, this becomes even more important to have ‘balanced’ kinematic through the middle plane of the frame, that is not bias toward the drive or non-drive side. The drive side sees long periods of loading, of relative low to medium force. Where the non-drive side sees momentousness loading, of a far higher magnitude. So very different forces – localized to a specific side.

        SUSPENSION ANTI-SQUAT

        The high anti-squat start allows for direct power from pedal to wheel for racing efficiency, and then drops off in mid-stroke to allow the suspension to work better while pedaling under power. Combined with the linear leverage ratio, the Stratos CF is there to propel you forward and ensure that your energy input is rewarded with forward motion.

        SUSPENSION KINEMATICS 

        The linear leverage ratio ensures the shock gets to full travel and allows the rider to have consistent damping throughout the whole shock stroke. The linear ratio allows for a consistent feeling and when setup for XC racing, the small bump compliance is minimized for stability under racing conditions and has good sensitivity to shock setup for course tuning.

      • WHY IT’S BEST.

        1. Stratos SX sports the same lightweight carbon frame as the top-of-the-range SBC race machine.
        2. Parts on the SX has been chosen to offer a top-end no compromise Privateer race bike. Pick it up today, race tomorrow.
        3. Boxed Asymmetric frame design makes for an incredibly stiff frame that's light where it can be and strong where it needs to be.
        4. Stratos SX features premium Surface alloy MTB wheels.
        5. Stratos SX's race focused POP geometry makes for a bike that is well balanced, offering major traction on climbs and grip on descents. POP also engages bigger muscle groups to pedal, making climbing easier.
        6. CF1 is dropper compatible with internal routing. The added weight of the dropper will soon be forgotten after the first drop - go on, do it!

        ENGINEERING NOTES.

        1X DRIVETRAIN SPECIFIC DESIGN

        Front derailleurs are dead! 1 X Drivetrain means a single chaingring in the front and multiple gears on the cassette. Most popular setups is 1 X 10, 1 X 11 or 1 X 12 With that comes a wider main pivot bearing stance for increased stiffness.

        BOXED ASYMMETRIC TUBE PROFILES

        Asymmetric tubes allow for the dispersion of shock forces between the top tube and downtube. At the riding sag point most of the shock forces are directed along the top tube. At suspension bottom-out, the rear shock rotates and shock forces are split between the top tube and downtube via the single sided support strut.

        BURST FLEX SUSPENSION

        Burst flex suspension platform utilizes flexible carbon seat stays, eliminating the need for a rotational pivot (bearings or bushings) in the rear triangle. Carbon fibre's properties work alongside the shock and leverage ratio to create a cohesive suspension platform. Elimination of a pivot point results a lighter frame that requires less maintenance.

        IN-TRIANGLE STORAGE BOX CRADLE

        Optional storage box for spares or nutrition without reducing bottle count. Can be detached when you'd rather save the weight. Top-opening zip for easy access while riding.

        METRIC SHOCK

        Metric shocks perform better and have optional bearing hardware for low friction rotation, supported on the rocker side.

        POP GEOMETRY ADAPTED FOR RACING

        As modern XCO and XCM courses become more technical, we've adapted the bikes to suit not only the current trails, but also where XC is headed. Slacker head angles and longer wheelbases, along with other geometry and suspension tweaks allow for a bike that is more capable and forgiving on the downhills, but does not sacrifice any uphill ability in the process.

        SAG INDICATOR

        Don't leave setup up to chance, line up the rocker notch with the marking on the seatstay to guarantee perfect sag setup.

        SINGLE SIDED SUPPORT STRUT (REAR SHOCK TO DT)

        By triangulating the tubes it was possible to negate the need for a support strut on both sides. The role of the support strut is to split shock forces between the top tube and down tube.

        SAG INDICATOR

        Stratos features high quality Surface alloy rims built on Shimano hubs.

        TYPE OF CARBON USED AND LAY UP BENEFITS

        The structure is mainly composited of T700 UD carbon fibre. Offering equilibrium in stiffness to strength ratio. Rear triangle is constructed with migh-modulus carbon fibre to ensure indefinite fatigue life of the flex stays. UD carbon fibre has absolute strength in the direction of the fibre. Strategically controlling the fibre lay-up, produces a matrix that is stiff where desired and strong where necessary, with minimum weight addition. The frame is finished in a 3K Twill weave for a robust composite surface that can withstand any demands exerted by the rider.

      • SPECIFICATIONS.

        FRAMESET

        Frame

        Silverback Asymmetric Stratos Frame, 3K Twill Carbon Fiber, UD Carbon Flex stays and oversize pivots. BOOST, 29", 100mm Travel, Tapered HT

        Headset

        Semi-Integrated, ZS44/28.6 ZS56/40

        Frame Axle Spacing

        148x12mm

        Axle Specification

        174x12mm P1.75

        Hanger Type

        Hanger 3

        SUSPENSION

        Fork

        Rockshox Recon Silver, 100mm Travel, Lockout, Boost

        Fork Travel

        100mm

        Rear shock

        Rockshox, Metric, Stratos tune

        Rear Suspension Travel

        100mm

        Shock Mounting

        Body: Standard, 8x30mm

        Shaft: Standard, 8x20mm

        Eye-to-Eye x Stroke

        190x42.5mm

        WHEELS

        Wheelset

        Surface Custom

        Hubs

        Shimano

        Rims

        Surface Alloy

        Tyres

        Maxxis Rekon Race 29" x 2.25"

        Max Tyre Size

        2.5"

        DRIVETRAIN

        Crankset

        SRAM SX Eagle DUB, 32T

        Max Chainring Size

        36T

        Bottom Bracket & Type

        SRAM BB DUB PF MTB 92

        Shifter(s)

        SRAM SX Eagle Trigger

        Rear Derailleur

        SRAM SX Eagle

        Cassette

        SRAM SX Eagle 11-50T

        Chain

        SRAM

        BRAKES

        Brakes

        Shimano BR-MT200

        Rotors

        COCKPIT

        Grips

        Surface Double Density Lock-on

        Handlebar

        SBC alloy 780mm

        Stem

        Surface Alloy

        Saddle

        Surface Race

        Seat Post

        Surface Alloy, 30.9mm

        Seatpost Clamp

        Surface Alloy

        Pedals

        Not included

        WEIGHT

        Bike Weight

        from 12.5 kg

        RIDER WEIGHT LIMIT

        120kg - combined weight of bike and rider (including all kit).

        Disclaimer: Due to Covid-related scheduling and component availability challenges, bike specifications are subject to change without notice. Specifications may not be exactly what is shown in the photo.

      • FIND YOUR FIT

        Proper bike fit is as important as getting the right bike for the job. Long term comfort and performance can be greatly improved with the right size bike. This acts as a guide only, so if you are unsure, please visit your Silverback reseller to be professionally measured and sized for the perfect fit.

        GEOMETRY.

        map type(mm unless specified) S M L
        A Seat tube c/t 390 430 480
        B Seat tube angle 74.5 74.5 74.5
        C Head tube angle 69 69 69
        D Top Tube 575 597 625
        E Reach 415 435 456
        F Chainstay length 435 435 435
        G bb height 337 337 337
        H head tube length 90 100 110
        I stack 576 586 594
        J standover 710 774 800
        K Wheelbase 113 1136 1164
        L Height [cm] 154-170 168-180 178-192
        M Inseam [cm] 70-77 76-81 80-87
      • Customer Reviews

        Based on 4 reviews Write a review
        FAQ


        • Is this bike available in XL?

          No, the carbon Stratos SX is not available in XL but have a look at our size guide to see if you will fit on a large.

        • Does this bike come with a chainstay protector?

          Yes, but an aditional chainstay protector can be purchased on Speedlab.shop

        • What is the warranty on this frame?

          3 Years

        • Is the frame dropper compatible?

          Yes. All frame sizes feature long straight sections which will allow for long droppers

        • What maintenance do IGUS bushings require?

          Intermittent cleaning is the only maintenace IGUS bushings require. Ensure they are dry and clean of dust with a paper towel. Do not grease IGUS bushings since this will attract dust - IGUS bushings are self-lubricating and do not need to be greased.

        • What bearings does this frame use?

          Stratos uses headset bearings in the main pivot. These are Token C83-TBT bearings. Contact your local Silverback distributor for more info.

        • How does that suspension work?

          Stratos uses angular contact bearings for the main pivot. This means that as the bearings wear over time it is possible to nip out wear. Headset bearings are simple to disassemble, clean, and regrease, meaning with proper maintenance you shouldn't need to buy replacement bearings every year. All other pivot locations use IGUS bushings for low weight and longevity. Stratos CF uses a flex stay to further reduce weight and maintenance.

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