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    PROGRESSIVE THINKING
    IN DESIGN

    Stratos AL Pro
    Dual Suspension | Trail | Alloy | 29" | 130/105mm Travel | 14.1kg
    €2.699,00

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

    Size
      files/STEALTH-BLACK-WITH-GLOSS-BLACK-SILVER-DECALS.png

      KEY FEATURES

      • New Stratos asymmetric Hydro formed 6061 Alloy. 105mm travel, Carbon fiber rocker-link, Boost 148mm, tapered headtube.
      • Marzocchi Bomber Z2 Air Fork, 130mm Travel, 15x110mm Thru-Axle
      • RockShox Deluxe Select+ RT 210X55 Linear Air Can Shock
      • Sram SX Eagle Rear Derailleur
      • Shimano MT200 Hydraulic disc brakes
      • Maxxis Forekaster 29x2.35 EXO TR Tyres
      • Surface Custom wheelset, Tubeless Ready, 32H
      • Weight:14.1kg
      • OVERVIEW
      • WHY IT'S BEST
      • SPECIFICATIONS
      • GEOMETRY & SIZING
      • REVIEW & FAQ
      • DOWNLOAD PDF
      • XC EFFICIENCY, TRAIL BIKE CAPABILITIES.

        Stratos AL uses a 4-bar style rear suspension which is very well known and overall. Our platform uses in line top tube shock layout: this helps to minimize friction of the shock travel as it is in line and therefore has better break-away feel, so more small bump sensitivity and less stress onto the shock seals as the forces are very inline to the shock direction. Also allows for water bottle to be stored lower onto the down tube for lower centre of gravity, and easier fit for taller water bottles. We use fully sealed cartridge bearings at every pivot point, and the seat stay pivots use a double bearing setup for added durability and rear triangle stiffness.

        SUSPENSION KINEMATICS

        The steady drop in leverage ratio helps the suspension to stay on top of the rough terrain by giving excellent mid-stroke support, the travel area most felt by the rider in technical riding. The ratio levels a little near the end, helping to get to full travel with the air spring shock.

        SUSPENSION ANTI-SQUAT

        The low anti-squat helps the suspension stay active over small to medium sized bumps, giving excellent traction up hills and through corners. Combined with the mid-stroke support, the supple suspension doesn’t give way too easily, but allows the rider to pedal through rough terrain while the suspension keeps working.

        POP GEOMETRY ADAPTED FOR TRAIL

        Position-Of-Power geometry designed to engage bigger muscle groups in pedaling, producing more power output for the same amount of input. Longer frames place the rider forward, in a more balanced position, improving grip on the rear on climbs and on the front for descents. A longer wheelbase and slacker head angle means more control at speed.

      • WHY IT’S BEST.

        1. Aluminium Trail frame based on the award-winning Stratos platform. The Stratos AL is designed around 130mm travel front & 105mm rear to provide a little extra comfort with almost no performance trade-off.
        2. POP geometry means that the Stratos AL, with its unique part selection makes for the ultimate marathon and trail alloy crossover.
        3. Stratos AL is the bike every rider can get a massive kick from, easy on the climbs, nimble in the twisty stuff, it is an absolute blast on the descents.
        4. 4-bar suspension gives great small bump sensitivity, climbs efficiently - even fully open, and is big hit capable when you inevitably decide to send it.
        5. The combination of 105mm rear suspension, a 130mm fork, POP geometry and a dropper post as standard is unbeatable on any bike in this price range.

        ENGINEERING NOTES.

        1X DRIVETRAIN SPECIFIC DESIGN

        Silverback fits 1x (single-chainring) drivetrains to as many bikes as we can. 1x offers less maintenance, is more intuitive to use and offers a wider gear range than 3x groupsets.

        ASYMMETRIC FRAME

        A frames’ drive side sees different loading, compared to the non-drive side. Power transfer through the drivetrain is consistent and ramp up gradually. By contrast, the brakes exert sudden and high load during deceleration. Stratos AL asymmetric design is tailored to distribute these variable forces according to its respective magnitude and intensity.

        105mm 4-BAR SUSPENSION

        Stratos AL uses a 4-bar style rear suspension which is very well known and has many benefits. Our platform uses in-line top tube shock layout: this helps to minimize friction of the shock travel as it is in line and therefore has better break-away feel, so more small bump sensitivity and less stress onto the shock seals as the forces are very inline to the shock direction.

        DROPPER POST READY

        Dropper posts give the rider more options and freedom of movement and have become a standard in many disciplines of mountain biking. Stratos can accommodate much longer droppers with neat, pinch-free cable routing.

        LONGER STROKE METRIC SHOCK

        Inline shock suspension position reduces stiction and increases shock longevity. The Long 55mm stroke shock helps maintain excellent dampening properties on long downhills.

        INTERNAL CABLE ROUTING

        Cable routing is quick and easy, making installation a breeze. Internal routing keeps the bike neat and clutter free. It also means that cables are protected from impact damage. Full length cable housing also means less dirt contaminates the system and therefore less maintenance.

        CARBON FIBER ROCKER LINK

        Our carbon rocker linkage is stiff and light, helping the rear triangle track straight and limit excess additional weight with its full injection moulded design.

        BOTTLE CAGE MOUNTS

        Easy-access bottle mounts with plenty of space for larger capacity bottles.

        ASYMMETRIC RIMS, TYRE CLEARANCE

        Asymmetrical rims offer better stress triangulation/balance between both sides, improves durability. 

        All Stratos models offer 2.5" tyre clearance for larger volume tubeless ready tyres. This delivers uncompromised tyre choices, to match the terrain demands.

      • SPECIFICATIONS.

        FRAMESET

        Frame

        Aluminium XC/Trail frame based on the award-winning Stratos CF platform. The Stratos AL is designed around 130mm travel front & 105mm rear to provide a little extra comfort with almost no performance trade-off.

        Headset

        Token TK035A-15 Sealed Bearing, ZS44/28.6 ZS56/40

        Frame Axle Spacing

        148x12mm

        Axle Specification

        181x12mm P1.75

        Hanger Type

        HANGER 3

        SUSPENSION

        Fork

        Marzocchi Bomber Z2 Air, 130mm travel, 110mm Boost, 29", Tapered, Thru Axle

        Fork Travel

        130mm

        Rear shock

        RockShox Deluxe Select+ RT 210X55 Linear Air Can

        Rear Suspension Travel

        105mm

        Shock Mounting

        Body: Standard, 8x20mm

        Shaft: Standard, 8x20mm

        Eye-to-Eye x Stroke

        210x55mm

        WHEELS

        Wheelset

        SURFACE Custom Wheelset

        Hubs

        F: Shimano HB-MT400-B, 32H, 15mm Thru-Axle, 110mm OLD

        R: Shimano FH-MT400-B, 32H, 11 Speed, 12mm Thru-Axle, Center Lock, 148mm OLD

        Rims

        F: SURFACE 29" Asymmetrical Alloy Rim, Tubeless Ready

        R: SURFACE 29" Asymmetrical Alloy Rim, Tubeless Ready

        Tyres

        Maxxis Forekaster 29x2.35", 120TPi, EXO, Tubeless

        Max Tyre Size

        2.5"

        DRIVETRAIN

        Crankset

        Sram SX EAGLE BOOST 148 DUB, 175mm, 32T

        Max Chainring Size

        34T

        Bottom Bracket & Type

        BSA73

        Shifter(s)

        R: Sram SX Eagle Trigger

        Rear Derailleur

        Sram SX Eagle, 50T Max

        Cassette

        Sram SX Eagle, 11-50T

        Chain

        Sram SX EAGLE

        BRAKES

        Brakes

        Shimano MT200 Front Hydraulic, Resin Pads

        Rotors

        Shimano SM-RT10 180mm, with Lock Ring

        COCKPIT

        Grips

        SURFACE Double Density Lock-On

        Handlebar

        SURFACE Alloy, Dia: 31.8mm, 760mm, 9° Backsweep, 20mm Rise

        Stem

        SURFACE Alloy Stem, 31.8mm, Rise 6°

        Saddle

        SURFACE

        Seat Post

        SURFACE Dropper with Lever, 30.9mm

        Seatpost Clamp

        SURFACE Alloy

        Pedals

        Not Included

        WEIGHT

        Bike Weight

        14.1kg

        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 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

        Based on 4 reviews Write a review
        • Does this bike come with a chainstay protector?

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

        • How much travel does the fork on this bike have?

          130mm travel

        • What is the weight limit on the Stratos AL1?

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

        • Can I put a front derailleur of Stratos AL?

          No. The entire Stratos range is designed with wide range 1x drivetrains in mind. This allows for wider bearing stances and a stiffer frame

        • What bearings does this frame use?

          Stratos AL uses

        • Can I put a longer fork on this frame?

          No, it will void the warranty

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