Impulse D7
Perfect for
  • Morning jaunts to the coffee shop.
  • Storing behind your seat on a bus.
  • Beating traffic on morning rides into the city.
  • Searching for a great new lunch spot.
FeaturesSpecsAccessoriesSupportReviewsAwards
One of the best folding bike values on the market, the Impulse combines excellent ride characteristics, Dahon’s renowned folding technology, and an unbeatable price. The Impulse features a light yet strong frame, hand-welded from 4130 chromoly steel with patented Re-Bar and Fusion technology. New for 2008 is the stronger and stiffer Radius Telescope handlepost that adjusts for riders of all sizes.
highlights
  • Equipped with a Dahon Neos rear derailleur that features crisp, fast shifting and a low profile design that is protected from damage.
  • 4130 Chromoly frame incorporates six patented technologies.
  • New Radius handlepost is substantially stronger and stiffer.
  • Puncture resistant Schwalbe Marathon tires for bikes produced in the EU.
COLORS
SPEEDS 7
GEAR INCHES 34" - 92"
DISTANCE: SEAT POST TO HANDLEBAR Min: 640 mm (25.2") Max: 660 mm (26")
DISTANCE: SADDLE TO PEDAL Min: 675 mm (26.6") Max: 940 mm (37")
FOLDED SIZE 29 x 66 x 75 cm (11.4" x 26" x 29.5")
WEIGHT 12.2 kg (26.8 lbs.)
FOLDING TIME 15 seconds
SUGGESTED RIDER HEIGHT 142 cm - 193 cm (4'8" - 6'4")
MAX RIDER WEIGHT 105 kg (230 lbs)
FRAME Y Series, SuperLite 4130 chromoly, forged Lattice hinge, patented Re-Bar™ frame design, forged drop-outs
FORK Integrated, patented Fusion technology
HANDLEPOST Radius Telescope™ adjustable, patented Fusion™ technology, forged aluminum, Covert QR technology, patented InSide™ lock
HANDLEBAR 6061-T6 aluminum, Flat bar
HEADSET Dahon Fusion 2, Zero stack, cartridge bearings
GRIPS SRAM or Herrmann’s (EU assembly)
SADDLE Dahon Comfort or Selle Royal Alpine Gel (EU assembly)
SEAT POST SuperOversize, micro adjust, aluminum
SEAT CLAMP QR Custom oversize, aluminum
BRAKES ProMax V, aluminum, linear spring, stinless flex noodle
BRAKE LEVER ProMax V, aluminum bracket/aluminum lever
BRAKE CABLES & HOUSING SIS, Pearl silver housing, slick cables
FRONT HUB Dahon Mini, aluminum, sealed
REAR HUB Formula, cassette, aluminum, sealed
SPOKES 18/10 stainless steel, brass nipples or Sapim header, stainless steel, Polyax nipples (EU assembly)
RIMS Aluminum, silver anodized
TIRES Dahon Roulez, 20" x 1.5", high pressure 65 psi, skinwall or Schwalbe Marathon, 40-406mm, Kevlar puncture protection (EU assembly)
SHIFTER SRAM MRX Comp, SRS technology
DERAILLEUR Dahon Neos, RapidRise
CASSETTE 7 speed, 11-30T
CRANKSET Cold-forged 6061-T6 aluminum crank arms, hand-polished
BOTTOM BRACKET CH, chromoly axle
CHAIN KMC or SRAM (EU assembly)
PEDALS Suntour folding, non-slip
CHAINGUARD Chainring protector
KICKSTAND Aluminum, Dacromet bolt
CLIP SYSTEM Magnetix™ system
WHEEL REFLECTORS Yes
FRONT & REAR REFLECTORS Yes
ACCESSORY Reflective pants clip
*Note: These are our standard model specifications. The specifications for your country may differ slightly. We do our best to ensure that the specifications listed here accurately reflect the exact parts found on our production bikes. However, component changes do occur for various reasons and there may be brief delays on site updates. Also our distributors also regularly ask us to make component modifications to better reflect the requirements of their local markets. We reserve the right to make component changes without prior notification, which may cause discrepancies with the information listed on the web.
ArcLite rack
SKS Mini 20 mudguards
El bolso carry bag
AirPorter suitcase
KlickFix luggage
BioLogic™ PostPump
Dahon manuals

Folding and Unfolding Guide
dahon reviews

"Bike handling is excellent....I could ride it hands off for as long as I wanted."
- Cycling Plus, UK

"...a great value folding bike...it sets the benchmark for budget folders, outclassing the Pashley Micro, the DiBlasi, the Strida, the Gecko, etc."
- Cycling Plus, UK

"We have just bought one of your small folding bikes and it is terrific! The quality is first class and my wife just loves it. Refreshing to see great innovation and quality in North America. Keep at it."
- K. Oldfield, Canada

"...it is VERY good value for money. Most importantly the bike rides very well (much better than I expected). I have four other bikes (two good ones) that I ride regularly and have some experience for comparison. It is obvious that a lot of thought has gone into getting the geometry of the bike right.The folding mechanism works very well and is very fast once you get the hang of it. The bike folded is quite compact and portable. The bike also looks nice and the components do not look at all cheap and low quality. The brakes are excellent and seem more powerful in the dry at least than the Shimano mechanical disc brakes on my other bikes. When you compare the features/price with other folders like the Brompton (the closest rival I think), the Dahon wins hands down in my opinion. Well done."
- The Dahon Forum

Bronze Award - Bikes of the Year: Folders and Demountables"
"Plenty of thought has gone into the Impulse, it's a well sorted machine offering plenty of bangs per buck. It folds neatly as well…the benchmark budget folder…"
- Cycling Plus, UK