Calfee Dragonfly Classic Road Bike

Our lightest frame does not compromise

Now available in disc-brake or rim-brake versions. The Dragonfly tube set was designed to build the lightest possible bicycle frames without sacrificing stiffness, durability and ride quality.

We incorporated Boron fiber into the three main tubes to add some toughness and compressive stiffness. Boron is an attractive reinforcement because the resulting composite combines superior tensile, compressive and flexural strengths, high modulus, and low density in one system. When combined with the super high tensile stiffness of the carbon, the result is a frame material with the highest stiffness-to-weight ratio on the market. Check out our single bike geometry page for Pro Stack and Reach.

Dragonfly Classic Road Features:

Available in Pro (road), Adventure (endurance/gravel)
High tech boron/66 msi carbon fiber hybrid tubing
High modulus carbon fiber pressure molded lugs
Extra profiled titanium dropouts
Optional S and S Machine couplers
Disc-brake or Rim-brake versions
Optional rear axle spacing, tire clearance, brake type, cable routing and threaded eyelets
Optional custom frame geometry
Frame stiffness options
25 Year Warranty

Dragonfly Classic Road Benefits

Lighter, stiffer than Tetra and Luna
As stiff as other carbon frames but more comfortable; no buzz
More durable than other high-performance frames
History meets hi-tech with sculpted, carbon lugs

Dragonfly Geometry

Dragonfly, Geometry (Classic Models)

Size*	top tube length	seat tube angle	set back	chainstay length	stand over height	b.b. drop	head tube angle	head tube length	Stack	Reach	wheel base
46 **	50	75	11.9	39	71.5	4	72	9.1	N/A	N/A	93.4
48	51.5	74.5	12.7	41.5	74.0	7	72	9.1	50.5	37.3	97.0
50	52.5	74.5	13.4	41.5	76.2	7	72.5	10.0	51.5	38.2	97.1
52	53	74	14.3	41.5	77.4	7	73	11.3	52.7	37.8	97.2
54	54.8	73.5	15.3	41.5	79	7	73	12.8	54.2	38.7	98.0
56	56	73	16.4	41.5	81.3	7	73.5	15.0	56.3	38.8	98.8
58	57	73	17.0	41.5	82.3	7	74	16.0	57.2	39.5	99.4
60	58.3	72.5	18.0	41.5	84.4	7	74	18.0	59.1	39.7	100.0
62	60	72.25	19.0	41.5	85.8	7	74	20.0	61.1	40.7	101.0
64	61	72	19.8	41.5	87.3	7	74	22.0	63.0	40.7	102.0
66	63.3	71.5	20.8	41.5	88.0	7	74	24.0	64.9	42.2	104.3

*Frame size is measured from center of bottom bracket to bottom of binder.
Check standover height(ground to top of top tube) to be sure of proper fit.
Allow 1 to 2cm clearance to crotch. Click here for frame measurement terms.

**46 cm frames use 650 c wheels

Calfee Frame Pricing

Calfee Design 1-800-965-2171

More about the Dragonfly Classic

The use of boron fiber has come of age with its use in our high performance bicycle frames. Bicycle weights have dropped from 18 pounds back in the 1980s to 14 pounds or less in 2014. Much of this weight savings comes with the use of carbon fiber composites. As bicycle companies compete in the arms race to make even lighter, stiffer bikes, safety and durability are pushed to the limit. High modulus (66 Msi and greater) carbon fiber is being used to make stiff yet thin walled tubing. These tubes can be vulnerable to damage from a variety of real world sources. When slightly damaged from a pebble thrown up by a passing car, or an unfortunate event during a group ride or race, a thin walled tube can rapidly degrade to an unsafe condition. Our very popular Calfee Carbon Repair business is evidence of this common failure. Using boron filaments in the tube laminate mitigates this problem by significantly enhancing the tubes structural performance. Read More…

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