Serk A21 “The Dissident” Titanium Gravel Bike Frameset
Price range: $2,400.00 through $3,000.00
- Titanium 3Al/2.5V
- Flat mount disc brakes
- Rear 12x142mm
- Clearance for 700C x 45 / 650B x 55 tyres (measured)
- Di2 Compatible
- T47 Cast 1 Piece Bottom Bracket
- Full internal cable routing
- 3 bottle cage mounts
- Dropper post compatible (1x only)
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Description
Serk A21 “The Dissident” Titanium
The Dissident - your magic carpet ride for when the pavement ends.
Ultimate dependability in 3Al/2.5v titanium tubing and tire clearance for up to 650b x 55mm,this is the go anywhere and do anything bike. Combined with a one-piece 3D-cast T47 BB shell, all cables and housing are neatly routed internally so you will never have to worry about dirt or water getting into your cables again (we know, we've been there). This is the bike for you if you constantly find yourself strapping stuff onto your bike and escaping the tyranny of the city.
Sealed internal cabling throughout the frame
Clearance for 700c x 45 / 650b x 53
Mounts for mudguards / racks / lights
Use rear rack and mudguards mounts for the ultimate commuter bike
Dropper Post ready!
Specifications
700c or 650b (27.5") wheels
Internal cable routing, Di2 compatible
Internal mechanical dropper post cable routing
Flip Chip fork with side cargo mount
Seatpost diameter 27.2mm
T47 bottom bracket (68mm shell width)
Max Chainring 50/34 (2x) or 46 (1x)
700c x 40mm or 650b x 55mm measured
Headset ZS44 upper, EC44 lower
100x12mm front dropout spacing
142x12mm rear dropout spacing
Flat Mount 160mm Front and Rear (max 160mm rotor)
Fork : Serk Carbon Adventure, 12x100mm Thru-axle, Adjustable Rake, 3-pack Mount, Internal Dynamo Wiring, Carbon steerer
Fork Weight: 550g
Frame Weight:
Size S: 1840g ±5%
Size M: 1920g ±5%
Size L: 2030g ±5%
Size XL: 2100g ±5%
Includes Serk Semi-integrated headset, seatpost clamp, thru-axles, expander, Serk topcap
Geometry
Fun, sure-footed geometry: The soul of any bike is the geometry. Through years of experience of riding the backroads of Asia, we have tuned the geometry to represent what an all round adventure bike should feel like. 430mm of chainstay length makes sure that the rear end fits big volume tires and still remains snappy. The relatively steep seat angle ensures your weight is optimally centered between the two wheels and the lowered BB height makes you feel like you're sitting IN the bike rather than ON it. Along with a slackened out head angle, the A21 will smooth out the roughest roads you can throw at it.
| * | Size | S | M | L | XL |
|---|---|---|---|---|---|
| * | REACH | 364 | 377 | 390 | 403 |
| * | STACK | 547 | 574 | 596 | 618 |
| * | ADDITIONAL TOP HEADSET STACK | 10 | 10 | 10 | 10 |
| A | SEAT TUBE LENGTH | 485 | 510 | 535 | 560 |
| B | TOP TUBE LENGTH | 521 | 547 | 567 | 592 |
| C | HEAD TUBE LENGTH | 110 | 139 | 164 | 188 |
| D | SEAT TUBE ANGLE | 74 | 73.5 | 73.5 | 73 |
| E | HEAD TUBE ANGLE | 70 | 70 | 70 | 70 |
| F | BB DROP | 75 | 75 | 73 | 73 |
| G | CHAINSTAY LENGTH | 430 | 430 | 430 | 430 |
| H | WHEELBASE | 1009 | 1032 | 1054 | 1075 |
| I | FORK OFFSET | 47/52 | 47/52 | 47/52 | 47/52 |
| J | TRAIL(28C) | 73.7 | 73.7 | 73.7 | 73.7 |
Template (Multi-Cam is only applicable to A21, the other 3 templates can be used for any SERK model)
Discover more custom paint options in Colour Map.
Additional information
| Frame Size | S, M, L, XL |
|---|---|
| Frame Finish | Custom Paint ($500.00), Raw Ti |
| Seatpost | Carbon Seatpost ($100.00), Not Included |
Brand
SERK
| Brand Name: Serk | Chinese Company Name: 北京速旷文化传播有限公司 |
| Founded: 2011 | # of Employees: - |
| Headquarters: Beijing | Products Categories: Complete Bikes, Framesets |
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