eTandem
Flatten the hills. Reinvigorate your rides with electric motor assistance. Enjoy the handling, ride quality, and fit of a high performance bike while taming hills and headwinds.​ This custom electric-assist tandem amplifies both riders’ power to enjoy all the benefits of a tandem and an ebike.
*Up to 27.5 X 3.1 Tires
Tame the Hills
Bike Specs
Frame Material: Fully custom Titanium Frame & Fork
Motor: Bosch Gen 4 Performance Line CX or Performance Line Speed
Speed: Assist up to 28mph
Tire Clearance: 27.5″x2.4″ standard; customize up to 5.1″
Q-factor: As low as 169mm for stoker and captain
Batteries: 1 or 2 Bosch frame-mounted 500Wh
Complete Bikes: From $19000
eTandem standard size geometry chart (Custom sizing available)
| Size | S-M | S-XL | M-XS | M-M | M-L | L-M | L-L | LT-M | XL-S |
|---|---|---|---|---|---|---|---|---|---|
| Reach | 378.4 | 378.4 | 385.5 | 385.5 | 385.5 | 395.2 | 395.2 | 373.4 | 400.5 |
| Stack | 560.1 | 560.1 | 585.3 | 585.3 | 585.3 | 599.6 | 599.6 | 623.7 | 613.9 |
| Head Tube | 125 | 125 | 145 | 145 | 145 | 160 | 160 | 180 | 175 |
| Captain Effective Top Tube | 555 | 555 | 570 | 570 | 570 | 590 | 590 | 570 | 600 |
| Captain Seat Tube | 500 | 500 | 500 | 530 | 530 | 550 | 560 | 540 | 550 |
| Captain Standover | 776 | 780 | 792 | 815 | 808 | 827 | 838 | 821 | 827 |
| Boom Tube | 737 | 813 | 724 | 737 | 775 | 737 | 775 | 737 | 724 |
| Stoker Seat Tube | 420 | 500 | 320 | 410 | 500 | 420 | 450 | 410 | 390 |
| Stoker Standover | 685 | 747 | 612 | 685 | 757 | 696 | 727 | 682 | 670 |
| Head Angle | 71.5 | 71.5 | 72.5 | 72.5 | 72.5 | 72.5 | 72.5 | 72.5 | 72.5 |
| Captain Seat Angle | 72.5 | 72.5 | 72.5 | 72.5 | 72.5 | 72 | 72 | 72.5 | 72 |
| Stoker Seat Angle | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 |
| Captain BB Drop | 55 | 55 | 55 | 55 | 55 | 55 | 55 | 60 | 55 |
| Stoker BB Drop | 55 | 55 | 45 | 55 | 50 | 55 | 50 | 60 | 55 |
| Fork Length | 420 | 420 | 420 | 420 | 420 | 420 | 420 | 420 | 420 |
| Fork Rake | 60 | 60 | 55 | 55 | 55 | 55 | 55 | 55 | 55 |
| Front Center | 615 | 615 | 614 | 614 | 614 | 628 | 628 | 613 | 638 |
| Chainstay | 455 | 455 | 455 | 455 | 455 | 455 | 455 | 455 | 455 |
| Wheelbase | 1800.7 | 1876.7 | 1787.1 | 1800.1 | 1838.1 | 1814.3 | 1852.3 | 1797.9 | 1811.2 |
eTandem Build Kits (customization available)
| Rival 22 | eTap | |
|---|---|---|
| Fork | Titanium Chinook Gravel Tandem fork, 1 1/8 - 1 1/2" steerer, 15mm x 100mm Thru Axle | Titanium Chinook Gravel Tandem fork, 1 1/8 - 1 1/2" steerer, 15mm x 100mm Thru Axle |
| Headset | Cane Creek 40 | Cane Creek 110 |
| Front seatpost | Aluminum 28.6mm x 350mm Zero SB | Thomson Elite 28.6mm x 330mm Zero SB |
| Rear seatpost | Carbon suspension seatpost, 31.6 x 330mm x 20mm offset | Carbon suspension seatpost, 31.6 x 330mm x 20mm offset |
| Front handlebar | Ritchey Comp Curve | Zipp Service Course SL-70 Ergo |
| Rear drop handlebar | Ritchey Comp Curve with Cane Creek Stoker Levers | Zipp Service Course SL-70 Ergo with Cane Creek Stoker Levers |
| Rear bullhorn handlebar | Deda Elementi Crononero or Profile Stoker | Deda Elementi Crononero or Profile Stoker |
| Brakes | TRP Hy/Rd post-mount | SRAM HydroHC post-mount |
| Rotors | 203mm floating rotors | 203mm floating rotors |
| Shifters | SRAM Rival 22 | SRAM Red eTap HRD |
| Front derailleur | SRAM Rival 22 | SRAM Red eTap |
| Rear derailleur | SRAM GX Type 2.1 Exact Actuation Long Cage | SRAM Red eTap Wifli with Chinook x Digirit extended cage |
| Cassette | SunRace MX8 11-Speed 11-42T Cassette | Shimano XT CS-M8000 11-42 11-speed |
| Drive chainrings | SRAM 50/34 | SRAM 50/34 |
| Rear cranks | SRAM Force BB30 with extended spindle for right side timing chain | SRAM Force BB30 with extended spindle for right side timing chain |
| Front cranks | SRAM Rival BB30 | SRAM Force BB30 |
| Timing rings | SRAM 34t | SRAM / Wolf Tooth 34t |
| Timing chain/belt | SRAM PC-1170 | SRAM PC-1170 |
| Drive chain | SRAM PC-1170 | KMC X11e |
| Hubs | DT Swiss 350 Hybrid | White Industries XMR |
| Rims | Spank Oozy Trail 395+ | Spank Oozy Trail 395+ |
Accessories & Options
Gallery
