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    • OVERVIEW
    • WHY IT'S BEST
    • SPECIFICATIONS
    • GEOMETRY & SIZE CHART
    • REVIEWS
    • 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 GX Eagle, 120mm RockShox Recon Silver, and Stans alloy wheels, it sets the scene for serious racing. Stratos GX 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.

    ROTATING SHOCK

    Shock rotates upwards diverting forces. To support that, the shock brace is added. This brace is most needed when the forces are greatest, so at full compression. At full compression, the shock is least in line with the top tube. This strut diverts forces from top tube to the downtube.

    DESIGNER NOTES.

    BURST FLEX

    ASYMMETRIC FRAME

    CARBON FIBER FRAME

    INTERNAL DROPPER POST READY

    BIGGER VOLUME TYRES

    OVERSIZED PIVOT BEARINGS

    INTERNAL CABLE ROUTING

    Boost spacing

    Tubeless ready Wheels

    POP GEOMETRY

    1X Drivetrain

    WHY IT’S BEST.

    1. Stratos GX has the same lightweight carbon frame as the top-of-the-range SBC race machine.
    2. Parts on the GX 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 GX features Sunringle Duroc 35 wheels.
    5. Stratos GX'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. Stratos GX 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 PIVOT 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.

    Sunringle Duroc wheels

    Stratos features Sunringle Duroc wheels

    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.

    DRIVETRAIN
    Crankset SRAM GX Eagle DUB, 32T
    Cassette Sram GX (10-52)
    Rear Der SRAM GX Eagle
    Shifters SRAM GX Eagle Trigger shifter
    Bottom Bracket SRAM BB-DUB-PF92 Pressfit
    Chain GX Eagle 126 
    SUSPENSION
    Fork RockShox Recon Silver 120 Travel, Lockout, Boost
    Rear shock RockShox 190x42mm Metric, Stratos Tune
    WHEELS
    Hubs Sunringle Duroc 35
    Rims Sunringle Duroc 35
    Tyres Maxxis Rekon Race 29" x 2.25" 
    COCKPIT
    Seatpost alloy 30,9mm
    Saddle Surface Race
    Handlebar SBC alloy  780mm
    Stem Surface Alloy
    FRAME
    Frame Silverback Asymmetric Stratos Frame, 3K Twill Carbon Fiber, UD Carbon Flex stays and oversize pivots. BOOST, 29", 100mm Travel, Tapered HT
    BRAKES
    Brake set Shimano 6100 Breakset
    WEIGHT
    Weight from 11 kg
    Weight Limit 120kg - combined weight of bike and rider (including all kit). 
    TRAVEL
    Travel 100mm

    Disclaimer: Due to the nature of bike manufacturing, specification, finishes and price may be subject to change without prior written notification.

    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 XL
    Rider height(cm) 154-170 168-180 178-192 188-200
    Rider inseam(cm) 70-77 76-81 80-87 85-90
    A Seat tube c/t 390 430 480 510
    B Seat tube angle 76 76 76 76
    C Head tube angle 66 66 66 66
    D Top Tube 572 594 617 639
    E Reach 425 445 465 485
    F Chainstay length 435 435 435 435
    G bb height 340 340 340 340
    H head tube length 90 100 110 120
    I stack 589 599 608 617
    J standover 775 777 780 795
    K Wheelbase 1144 1168 1192 1216

    Customer Reviews

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