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Twostroke AL FOUR

NEON RED / GREY

SRAM SX Eagle Drivetrain
SR SUNTOUR XCM 32 Fork
XCD23 Wheels
1,699.00CHF
Other CurrenciesEURO €1599
CHF 1699
USD $1399
CAD C$1999
AUD A$
SCEuro €1699
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Twostroke AL emulates the Twostroke 01’s performance in a refined Smoothweld Premium Aluminium frame. Inspired by the Fourstroke and a fighter jet, it offers the perfect blend of performance, functionality and aesthetics, with radical geometry, wide tire clearance and integrated protection to combat technical terrain. SRAM’s SX Eagle 12-speed groupset and Level brakes are matched with a Suntour XCM 32 fork, XCD23 wheelset and Vittoria Barzo tires.

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Twostroke AL emulates the Twostroke 01’s performance in a refined Smoothweld Premium Aluminium frame. Inspired by the Fourstroke and a fighter jet, it offers the perfect blend of performance, functionality and aesthetics, with radical geometry, wide tire clearance and integrated protection to combat technical terrain. SRAM’s SX Eagle 12-speed groupset and Level brakes are matched with a Suntour XCM 32 fork, XCD23 wheelset and Vittoria Barzo tires.
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Innovation
Radical Geometry

A 67˚ head angle, long front-end and 75° seat angle to attack steep and loose terrain with the perfect weight distribution.

Internal Cable Routing

Improved durability and a clean, understated look.

Integrated Protection

Molded covers on the chainstay, an integrated chain suck plate and helicopter tape on the downtube ensure durability and a sleek design.

Wide Tire Clearance

Fully compatible with the new generation of wide XC tires.

Technical Overview

  • Frame

    Twostroke AL Premium Aluminium HydroformedInternal Cable RoutingBSA Threaded Bottom BracketPost Mount Disc

  • Fork

    SUNTOUR XCM 32

  • Gears

    1x12

  • Chainwheel

    SRAM SX Eagle 30T

  • Cassette

    SRAM SX Eagle 11-50T

  • Chain

    SRAM SX Eagle

  • Rear Derailleur

    SRAM SX Eagle

  • Shifters

    SRAM SX Eagle

  • Brakes

    SRAM Level

  • Handlebar

    Alloy 760mm

  • Stem

    Forged 6061 Alloy

  • Seatpost

    Alloy 31.6mm - 0mm offset

  • Saddle

    Selle Royal Seta

  • Hubs

    Shimano MT400 / MT410

  • Rims

    XCD23

  • Tires

    Maxxis Rekon Race 2.25"

  • Tire Clearance

    58mm (measured width)

  • Weight Limit

    110 Kg

  • ASTM Classification

    Level 3

BMC Twostroke AL FOUR | Mountain Bikes

Size S M L XL
Rider Height CM <170 170-182 180-192 >190
Stack MM 588 598 608 623
Reach MM (reach) 422.5 445 465 485
Seat Tube MM (st) 410 440 480 510
Top Tube MM (tt) 597 618 638 658
Head Tube MM (ht) 87 93.5 106 122.5
Seat Tube Angle (sa) 75.0 75.0 75.0 75.0
Head Angle (ha) 67.0 67.0 67.0 67.0
Rear Center MM (rc) 425 425 425 425
Front Center MM (fc) 696 715 741 767
Wheelbase MM (wb) 1112.5 1135 1161 1185
BB Drop MM (drop) 64 64 64 64
Fork Length MM (fl) 505 505 505 505
Fork Rake MM (fr) 44 44 44 44
Trail MM (trail) 109 109 109 109
Crank Length MM 170 175 175 175
Stem Length MM 60 60 60 70
Bar Width MM 760 760 760 760
Bar Rise MM 4 4 4 4
Backsweep 9 9 9 9
Standover Height mm 725 730 735 750
Seatpost Length MM 350 400 400 400

Frameset

  • Twostroke 01 premium aluminum, hydroformed, smoothwelded

Technical Details

  • Round seatpost, 31.6 mm
  • Internal cable routing
  • ASTM level 3

Sizes

S, M, L, XL


Frame Weight*
1850 g


Compatibility

Frame, Fork and Seatpost

  • 1x drivetrain specific
  • BSA threaded bottom bracket
  • 31.6 mm dropper seatpostosts, stealth cable routing
  • Replaceable standard or direct mount rear derailleur hangers
  • 2x waterbottle mounts

Brakes

  • Post mount, 160 mm

Wheels and Axles

  • 29" x 58 mm tire clearance
  • 12x148 mm boost rear axle

*Weight for the lightest finish, including complete hardware with size M frames

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