Source Expert Disc Step-Through
Part No.  

Source Expert Disc Step-Through

Part No.  37947
load-spinner
A true multi-tasker for anything from commuting to a loaded weekend camping trek down the coast, the Source Expert Disc does it all anytime, anywhere. Equipped with disc brakes and integrated lights, rack, and fenders, this step-through frame adds convenience, plus the 2x10 FSA/SRAM Apex drivetrain means light weight and flawless shifting.
  • SRAM Apex 2x10 drivetrain with 11-32t cassette and FSA compact crank for the latest in lightweight, wide-range gearing and spot-on shifting every time
  • Sturdy alloy fork with Cr-Mo steerer and fender/rack mounts and internal light cable routing for the ultimate multi-purpose bike
  • Strong, reliable Avid hydraulic disc brakes for sure stopping and control in any weather with any load
  • All-new, super light E5 fully-manipulated alloy frame is built for high speed, low-fuss, and great versatility, with tapered head tube, internal routing, rack/fender mounts, and center kickstand attachment
  • Body Geometry Contour gel grips lock on and help alleviate hand pain and tingling fingers, compatible with integrated bar ends for changing hand position
  • Supernova E3 Pro headlight supplies over 300 lumens of light, plus a minimal but superbright taillight to keep you safe on the road anytime, both powered with a on/off switchable Supernova Infinity 8 hubdynamo
  • Supernova Infinity 8 hub-dynamo is superlight and can be switched off for a drag free option
  • Super light and compact Racktime Ultra hollow alloy rack lets you carry supplies without adding a lot of bulk, max load 10kg

Technical Specifications

FRAMESET
SEAT BINDER 31.8 clamp ID, superlight forged and machined alloy
HEADSET 1 1/8"" sealed Cr-Mo bearings integrated w/ headset, 20mm alloy cone spacer with 20mm of spacers
FRAME Specialized E5 aluminum, fully manipulated tubing, smooth weld, compact design, inside rear triangle disc mount, internal cable routing, integrated headset, fender/rack eyelets, center kickstand plate
WHEELS
FRONT HUB Supernova Infinity 8 dynamo hub, Freespin technology switchable drag, QR
REAR HUB Forged alloy, sealed, cassette, QR, 32h
INNER TUBES Presta Valve
SPOKES Stainless, 2mm
RIMS DRX300 Disc, alloy double-wall, sleeved, CNC machined, 32h
FRONT TIRE Specialized Espoir Sport Reflect w/ double BlackBelt, 60 TPI, wire bead, 700x30c
REAR TIRE Specialized Espoir Sport Reflect w/ double BlackBelt, 60 TPI, wire bead, 700x30c
DRIVETRAIN
BOTTOM BRACKET GXP, external bearing
CHAIN KMC DX10SC
CRANKSET FSA Omega, 48/34, w/chainguard
CASSETTE SRAM 1050, 10-speed, 11-32t
SHIFT LEVERS SRAM S700 flat bar, 10-speed
FRONT DERAILLEUR SRAM Apex
CHAINRINGS 48/34, alloy outer ring, w/chainguard
REAR DERAILLEUR SRAM Apex
COCKPIT
SADDLE Body Geometry Riva Comp, 155mm wide
SEATPOST Alloy, 2-bolt forged head, 27.2mm, 350mm
GRIPS Body Geometry Contour Women's, lock-on for bar ends
HANDLEBARS Specialized Expert flat bar, 2014 aluminum, 31.8mm
STEM Specialized Elite-Set, 3D forged alloy, 4-position adjustable, 4-bolt 31.8mm clamp
BRAKES
BRAKE LEVERS Avid Trekking hydraulic, 3-finger lever
FRONT BRAKE Avid Trekking hydraulic disc, 160mm G2CS rotors
REAR BRAKE Avid Trekking hydraulic disc, 160mm G2CS rotors
ACCESSORIES
PEDALS Sirrus pedal, nylon body, symmetric alloy cage, low profile bearing system, toe clip capable
SUSPENSION
FORK Aluminum legs/crown, Cr-Mo steerer, 52mm fully integrated headset, fender/rack eyelets, internal light cable routing

Geometry

Geometry Chart

- Geometry

 
Stem Length 90mm 90mm 100mm 100mm
Crank Length 170mm 175mm 175mm 175mm
Handle-Bar Width 580mm 580mm 580mm 580mm
Wheelbase 1065mm 1073mm 1082mm 1103mm
Seat-Tube Length, B-B Center to Top 440mm 485mm 530mm 570mm
Head-Tube Length 150mm 165mm 190mm 225mm
Top-Tube Length, Horizontal 570mm 580mm 600mm 620mm
Front-Center 629mm 637mm 647mm 667mm
Head-Tube Angle 71° 71.5° 72° 72°
Fork Rake 51mm 51mm 51mm 51mm
Trail 67mm 63mm 60mm 60mm
Stand-Over Height 750mm 786mm 821mm 859mm
Chain-Stay Length 445mm 445mm 445mm 445mm
Seat-Tube Angle 73.25° 73.5° 73° 73°
B-B Drop 70mm 70mm 70mm 70mm
Seat-Post Length 350mm 350mm 350mm 350mm

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