da Vinci Designs Symbiosis XC Tandem
Now available with a STEP electric assist motor. See the “Other Options & Upgrades” tab below.
Di2 3 x 11 Electronic Shifting Shift Upgrade available
This bike is the benchmark cross-country off-road tandem.
So far we have won most of the races ever entered with this bike. 24 Hours of Moab, Leadville 100, Vail Ultra 100…
Dropped top tube for better stand-over and suspension adjusted geometry. It screams “Take me down that fire road.” The Symbiosis XC comes with a race tested suspension fork and a 100mm (4″) travel Thudbuster seat post.
Symbiosis XC Components
| Frame Material Retail Prices |
$6995 Reynolds Chrome-moly Steel $9095 Chrome-moly with S&S Couplers* $7275 Custom Reynolds 7005 Aluminum $10495 Titanium $14995 Titanium with S&S Couplers* $10895 Carbon Fiber** $13995 Carbon Fiber with S&S Couplers* *S&S Couplers allow the frame to be taken apart and fit into a small travel case. Also includes : reusable frame pads, Easy-Split cable separators, and self extracting crank bolts. **Carbon Fiber frames have limited tire clearance. 26″ with 2″ tires max. |
| Fork | MRP Stoke Tandem Fork 80mm, 100mm, or 120mm |
| Shifters | Shimano XT 3×11 – – Option XT Di2 |
| Rear Deraileur | Shimano XT – – Option XT Di2 |
| Front Deraileur | Triple – – Option XTR Di2 |
| Brakes | Avid BB7 Front and Rear Disc with 200mm rotors – Option XT Four piston Hydraulic with 203mm Icetech rotors |
| Front Bars | Flat or riser mountain bars |
| Rear Bars | Profile Stoker 26 – 47cm |
| Front Stem | Thomson Elite X2 |
| Rear Stem | Control Tech Adjustable Stoker |
| Cranks | da Vinci Designs Billet Machined (wide choice of lengths) |
| Rear Cogs | 11-36 or 11-40 |
| Driving Gears | Shimano Hyperglide 13-21-28 Equivalent to 24-39-53 or even lower gear options |
| Eccentrics | da Vinci Designs |
| Front Hub | White Industries XMR Boost 110 x 15 |
| Rear Hub | White Industries Tandem Disc – 145mm |
| Rims | 26″, 27.5″ or 29″ Velocity Blunt 35 |
| Tires | Picked for your application. |
| Front Seatpost | Thomson Elite 31.6mm |
| Rear Seatpost | Thudbuster LT |
| Saddles | Selle Italia Man Flow and/or Lady Flow |
| Colors | Click here to see the Paint Colors page |
NEW Shimano Di2 $2200 upgrade
XTR 11×3 with Handlebar Display unit so you can see what gear (front and rear) you are in as well as battery level and easy charging port.
Di2 with four piston hydraulic brakes and 203mm Icetech rotors $2800
Other Upgrades, Options and Additions
| Di2 Electronic Shifting | Built with XTR triple front derailleur, XT rear der, and display | $1900 |
| Electric Assist | Built with Shimano STEPS E8000 motor and BT-E8010 battery | $3700 |
| White Industries Freewheels | These are the highest quality freewheels made and have been adapted to our Independent Coasting Drivetrain. Durable, precision, and sealed. 17, 18, or 19 tooth | $185 |
| Titanium Bottom Brackets | Same design as stock (See Components page) Save 55g each or 110g per tandem | $75 ea |
| Cane Creek 110 Headset | The best headsets money can buy. Cane Creek has 110 year Warrantee. | $75 |
| Black Hubs and Spokes | This option is for bikes with White Industry Hubs. | $40 |
| Spinergy TX2 Tandem Wheels | Ask about availability | Ask |
Options & Upgrades
Cranks
200mm, 180mm, 175mm, 172.5mm, 170mm, 167.5mm, 165mm, 160mm, 150mm, 3 hole 130/150/170mm, or 3 hole 120/140/160mm
Tires
| Model (F= Folding, W=Wire bead) |
Description | Actual Width | Weight | |
| Panaracer RIBMO 700×28 /F | Great, long wearing, stable, fast, and good puncture resistance. |
1.10″ (28mm) | 392g | |
| Panaracer RIBMO 700×32 /F | Wider version of above tire. | 1.25″ (32mm) | 400g | |
| Panaracer RIBMO 26″x1.25″ /F | Great, long wearing, stable, fast, and good puncture resistance. |
1.18″ (30mm) | 355g | |
| Panaracer RIBMO 26″x1.5″ /F | Wider version of above tire. | 1.45″ (36mm) |
440g | |
| Continental GP Four Seasons 700 x 28mm /F |
Great road tire ***Add $70 for the pair | 1.10″ (28mm) | 280g | |
| We have other tires. | We stock tires from skinny to knobby, please ask. | |||
Captain Stem
| 10 deg. rise | 60, 70, 80, 90, 100, 110, 120, 130mm | N/C |
| 17 deg. rise | 60, 75, 90, 100, 110, 120, 130mm | N/C |
| 25 deg. rise | 75, 90, 105,120mm | N/C |
| 40 deg. rise | 75, 90, 105,120mm | N/C |
Captain Drop Bars
| FSA Wing Compact | Comfortable shape drop bars with a shallow drop. 44cm (default), option 42cm | N/C |
| Profile Cobra | Carbon Fiber drop bars with ergonomic contours | $225 |
| ENVE Composites | What can you say, ENVE Composites drop bars, are light, strong, the best | $306 |
Stoker Stem
| Control Tech Adjustable | Long 200 to 255mm. They can be cut shorter. | N/C |
| Control Tech Adjustable | Medium 170 to 225mm. They can be cut shorter | N/C |
| Extra Stoker Boom | Long stoker stem boom to switch between an adult and child stoker, and the adjustment of the stoker stem is not enough. |
$45 |
| 2″ (50mm) Stem Riser | This stem extension works with most bars to raise, or move it closer. . |
$48 |
| Fixed Length Titanium | Half the weight of an adjustable stem. Available in 160mm, 180mm, or 200mm. Custom length available for addition cost. | $125 |
Stoker handlebars
| Profile Stoker Bars 47cm wide | Light, comfortable, multiple hand positions. Allows most fore/aft reach range. |
N/C |
| Profile WingA Stoker Bar 46cm | Same as above with OS Clamp (31.8mm) “Wing” flat area for comfort. | $37 |
| Profile Cobra Wing Stoker Bar 46cm | Some as WingA above but carbon fiber, lighter, and hand contours for even more comfort. | $225 |
| 46cm Wide Drop Bars | Wide drop bars to clear the captain’s hips (price includes Cane Creek stoker levers). | $49 |
| 44cm Profile Cobra Drop Bars | Profile Cobra carbon fiber drop bars with Cane Creek stoker lever. | $274 |
| 44cm ENVE Composites Drop Bars | ENVE Composites carbon fiber drop bars with Cane Creek stoker lever. | $355 |
| Flat Mountain Bars | Some prefer the wider flat bars. Lighter, too. | N/C |
| 25 to 90mm Riser Bars | For tall stokers with short captains, or stokers who like to sit up more. | $20 |
| Bar ends | Add comfort and hand positions to flat bars or riser bars. | $25 |
Child Adapter
| Child Kit | Clamps to rear seat tube for higher crank location. Price includes BB Spindle and length of chain. This works great with our Three Hole Cranks |
$175 |
| Extra Stoker Boom | Long stoker stem boom to switch between an adult and child stoker, and the adjustment of the stoker stem is not enough. |
$45 |
Stoker Seatposts
| Thudbuster Short Travel | Lightest shockpost we stock., 440g. Includes different elastomers to tune spring rate. |
| Thudbuster Long Travel | Longest Travel, requires 144mm from saddle rails to top of seat tube, 565g. Includes different elastomers to tune spring rate. |
| Cirrus Kinekt Seatpost 2.1 | Advanced suspension design. Adjustable, active, comfortable. Add $100 529g Available in three weight ranges: 100-150lbs, 150-200lbs, 200-250lbs. |
Saddles
| Sella Italia Man Flow (TransAm) and/or Lady Flow (TransAm) |
| Velo Pronto and Serina Men’s and/or Women’s |
| We have other saddles. Call to inquire. |
