Bino: Dahon Vitesse T20

This is a folding bicycle originally meant for basic commuter use.

Since purchase, I have outfitted Bino to grow along with my strengths as a cyclist – at slightly greater cost than expected. Frame joint problems in the past have sidelined him more than I’d like, but he now sports a full 2×10-speed drivetrain and sees duty on both the turbo trainer and on short trips.

Why have I called this bike a “T10” or “T20”? Well, Dahon and Tern do not use the “T” designation for any specification of their bikes, and the letter matches up well with the Shimano Tiagra drivetrain and Alivio Trekking braking hardware. The designation describes the bike’s suitability for light touring, as well.

Acquisition as Vitesse D7

Newson Sportec x LitePro custom wheelset by Tryon

T10 upgrade: Shimano Tiagra 4600 rear drivetrain

Ergon GP3-S handlebar grips with integrated bar ends

WTB Silverado Sport saddle + Cat Eye RM-1 saddle rail mount + Rapid 5 TL-LD650 safety light

Shimano Alivio Trekking T4000 brake hardware

T20 upgrade: Shimano Tiagra front shifter and front derailleur + FC-R565 crank

Shimano Saint PD-MX80 flat pedals

Cat Eye Volt 800 front light

Shimano Deore PD-M530 SPD pedals

Schwalbe Marathon Racer tires, 20″ x 1.5″



  • Dahon KA-series 6061 aluminum alloy folding frame
    • 130 mm O.L.D.
    • ViseGrip main frame hinge and latch
    • Vertical quick-release dropouts
    • Non-replaceable rear derailleur hanger
  • Dahon chromoly steel fork, 74 mm O.L.D., vertical quick-release dropouts
  • Dahon aluminum telescoping handlepost
  • Dahon Magnetix system


  • Shimano 105 CN-5701 10-speed chain
  • Shimano FC-R565 road double crankset, 172.5 mm arms, 50/34T
  • Shimano Ultegra SM-BBR60 Hollowtech II outboard bottom bracket
  • Shimano Tiagra FD-4600-F braze-on front derailleur
    • LitePro SP8 front derailleur adapter
  • Shimano Tiagra SL-4603 triple front trigger shifter
  • Shimano Tiagra CS-4600 10-speed cassette, 12-30T
  • Shimano Tiagra RD-4600-GS rear derailleur
  • Shimano Tiagra SL-4600 10-speed rear trigger shifter
  • Shimano SP-41 shift cable housing
  • Shimano steel shift cables


  • 20″ (406 mm) custom wheelset by Tryon
    • LitePro folding bike hubs, 74mm F, 130 mm R, anodized red
    • Newson Sportec rims, silver, 406 mm x 14 mm
    • Newson Sportec spokes and nipples, black
  • F: Schwalbe Marathon Racer tire, 20″ x 1.5″ (ISO 40-406), reflective sidewall
  • R: Schwalbe Marathon Racer tire, 20″ x 1.5″ (ISO 40-406), reflective sidewall


  • Shimano Alivio Trekking BR-T4000 V-brake arms front and rear
  • Shimano Alivio Trekking BL-T4000 brake levers
  • Shimano V-brake pads
  • Brakco brake cables


  • Dahon 25.4 mm x 580 mm aluminum alloy flat handlebar
  • Dahon 33.9 mm x 580 mm aluminum alloy oversize seatpost
  • Ergon GP3-S grips with integrated bar ends
  • WTB Silverado Sport saddle, 133 mm x 274 mm
  • Shimano Deore XT PD-T780 SPD+Flat trekking pedals


  • Topeak Wedge Drybag S saddle bag
  • Cat Eye Reflex Auto TL-LD570 rear safety light
  • Cat Eye Volt 800 HL-EL471RC front light
  • SKS chromoplastic fenders
  • SKS long rubber mudflap
  • Lezyne Power Cage aluminum bottle cage
  • Giyo GP-61S mini pump
  • Biologic Portage rear rack

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