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    BIG FREE

    BIG FREE
    You have to choose first.
    BIG FREE

    When E-MTB beginners get their money’s worth


    With the BIG FREE, you get an easy, uncomplicated and cost-effective intro into the world of e-mountain biking. This E-MTB offers powerful motor support, high-quality equipment and plenty of riding joy without breaking the bank. To anyone looking for a quick and uncomplicated introduction into the world of e-mountain biking, the BIG FREE is a solid and cost-effective option. Thanks to a torque of 50 Newton-metres, the SR Suntour rear motor offers harmonious and dynamic support. And an infrared sensor, fitted neatly on the crank, ensures you get the right pedal assistance every time. Thanks to the high-performance battery pack, e-mountain bikers can cover the distance and fully take in the off-road experience. Hydraulic disc brakes and the high-quality Schwalbe Smart Sam tyres complete the outstanding price-performance ratio.
    The article reference number is .

    Techn. spezifications


    Engine manufacturer SR Suntour
    Engine type Rear Motor System
    Torque 250 Watt
    Assistance speed up to 25 km/h
    Power pack BMZ
    Power type Lithium Ionen
    Battery voltage 36 V
    Battery capacity (Ah) 12,4 Ah
    Battery capacity (Wh) 446 Wh
    Frame Aluminium 7005
    Frame size 41 cm, 46 cm, 51 cm, 56 cm
    Wheel size 27,5 inch
    Fork SR Suntour XCM DS HLO
    Travel 100 mm
    Headset Semi integrated
    Rear derailleur Shimano Acera RD-M3000-SGS
    Shifter Shimano SL-M360
    Gears 8 derailleur gears
    Bottom bracket Shimano BB-UN26
    Crank set Shimano Altus FC-M311 42/32/22
    Cassette Shimano CS-HG200-8 12-32T
    Brakes Tektro HD-M285 hydraulic disc brakes
    Brake levers Tektro HD-M285
    Saddle BULLS
    Seatpost STYX Aluminium
    Chain Shimano CN-HG40
    Rims STYX DDM-2
    Front hub Formula DC 71
    Rear hub SR Suntour EBHM16 rear motor system
    Tires Schwalbe Smart Sam
    Tyre size 57-584 (27,5 x 2.25)
    Handelbar STYX Aluminium
    Stem STYX Aluminium
    Pedals Wellgo
    Weight ca. 23,9 kg
    Sex Male
    Admissible total weight 115 kg

    Frame geometries


    Frame Geometry

    Frame geometries


    Frame Height 41 cm 46 cm 51 cm 56 cm
    Seattube length A 410 mm 460 mm 510 mm 560 mm
    Toptube length B 565 mm 585 mm 605 mm 625 mm
    Head Tube C 120 mm 120 mm 145 mm 175 mm
    Wheelbase D 1077.0 mm 1099.0 mm 1120.0 mm 1144.0 mm
    Chain strut E 450 mm 450 mm 450 mm 450 mm
    Crank Offset F 45 mm 40 mm 40 mm 35 mm
    Reach R 377 mm 399 mm 412 mm 425 mm
    Stack S 613 mm 608 mm 632 mm 655 mm
    Seating angle α 73.0° 73.0° 73.0° 73.0°
    Steering angle β 70.0° 70.0° 70.0° 70.0°

    Find the right frame size

    The right frame size is the basis for comfort, performance and long-term driving pleasure

    Our size recommendations for your BULLS bike according to the different bicycle types and areas of use. The information in the table serves as a reference. Your individual frame size may differ depending on your build.

    You could also just go to the BULLS specialist dealer right away for advice and take your pick during a test ride.

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