Upgraded from a hybrid to an endurance road bike and it has been a delight. Super smooth electronic gear changes, light and really comfortable. Thanks Ralph for the guidance along the way.
Product Details
Trek Domane SL 6 105 Di2 Gen 4 Road Bike
The Trek Domane SL 6 105 Di2 Gen 4 Road Bike is a lightweight endurance bike designed for comfort, efficiency and performance over long distances. Its 500 Series OCLV Carbon frame delivers a smooth, stable ride with aerodynamic tube shaping to help you go faster with less effort.
A wireless Shimano 105 Di2 electronic drivetrain provides precise, reliable shifting, while alloy wheels and handlebars strike a balance between value and performance. Ideal for riders who want modern tech and all-day comfort without stepping into the top-tier price range.
Features
- Frame: 500 Series OCLV Carbon, IsoSpeed, internal storage, tapered head tube, internal cable routing, 3S chain keeper, mudguard mounts, flat mount disc, 142x12 mm thru axle
- Fork: Domane SL carbon, tapered carbon steerer, internal brake routing, mudguard mounts, flat-mount disc, 12x100 mm thru axle
- Weight limit: This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 125 kg (275 lb)
- Battery: Shimano BT-DN300
- Charger: Charging cable included
- Shifter: Shimano 105 R7170, 12-speed
- Front derailleur: Shimano 105 R7150 Di2, braze-on, down swing
- Rear derailleur: Shimano 105 R7150 Di2, 36T max cog
- Crank:
- Size - 44, 47, 50: Shimano 105 R7100, 50/34, 165 mm length
- Size - 52, 54, 56: Shimano 105 R7100, 50/34, 170 mm length
- Size - 58, 60, 62: Shimano 105 R7100, 50/34, 172.5 mm length
- Bottom bracket: Praxis, T47 threaded, internal bearing
- Cassette: Shimano 105 7101, 11-34, 12-speed
- Chain: Shimano SLX M7100, 12-speed
- Max chainring size: 1x: 48T, 2x: 52/36
- Wheel front: Bontrager Aeolus Elite 35, OCLV Carbon, Tubeless Ready, 35 mm rim depth, 100x12 mm thru axle
- Wheel rear: Bontrager Aeolus Elite 35, OCLV Carbon, Tubeless Ready, 35 mm rim depth, Shimano 11-speed freehub, 142x12 mm thru axle
- Hub front: Bontrager alloy, sealed bearing, CenterLock disc, 100x12 mm thru axle
- Skewer front: Bontrager Switch thru-axle, removable lever
- Hub rear: Bontrager Affinity Comp, Shimano 11/12 speed freehub, 142x12 mm thru axle
- Skewer rear: Bontrager Switch thru-axle, removable lever
- Rim: Bontrager Aeolus Elite 35, OCLV Carbon, Tubeless Ready, 35 mm rim depth, 100x12 mm thru axle
- Rim strip: Bontrager TLR
- Max tyre size: 38 mm without mudguards, 35 mm with mudguards (as measured, see manual for details)
- Saddle: Verse Short Comp, steel rails, 145 mm width
- Seatpost:
- Size - 44, 47, 50, 52, 54, 56: KVF aero carbon seat post, 20 mm offset, 280 mm length
- Size - 58, 60, 62: KVF aero carbon seat post, 20 mm offset, 320 mm length
- Handlebar:
- Size - 44, 47: Bontrager Comp, alloy, 31.8 mm, 80 mm reach, 121 mm drop, 36 cm control width, 40 cm drop width
- Size - 50, 52: Bontrager Comp, alloy, 31.8 mm, 80 mm reach, 121 mm drop, 38 cm control width, 42 cm drop width
- Size - 54, 56, 58: Bontrager Comp, alloy, 31.8 mm, 80 mm reach, 121 mm drop, 40 cm control width, 44 cm drop width
- Size - 60, 62: Bontrager Comp, alloy, 31.8 mm, 80 mm reach, 121 mm drop, 42 cm control width, 46 cm drop width
- Handlebar tape: Trek EcoTack
- Stem:
- Size - 44: Trek RCS Pro, -7-degree, 60 mm length
- Size - 47: Trek RCS Pro, -7-degree, 70 mm length
- Size - 50: Trek RCS Pro, -7-degree, 80 mm length
- Size - 52, 54: Trek RCS Pro, -7-degree, 90 mm length
- Size - 56, 58: Trek RCS Pro, -7-degree, 100 mm length
- Size - 60, 62: Trek RCS Pro, -7-degree, 110 mm length
- Brake rotor: Shimano CL700, CentreLock, 160 mm
Highlights
- 500 Series OCLV Carbon Frame and Carbon Fork
- Shimano 105 Di2 Groupset
Specifications
- Model
- Domane SL 6 105 Di2 Gen 4
- Battery [Maker]
- Shimano
- Bottom Bracket [Maker]
- praxis
- Bottom Bracket Standard
- T47
- Brakes [Kind]
- Hydraulic Disc
- Brakes [Maker]
- Shimano
- Brakes [Model]
- 105
- Cassette [Gearing]
- 11-34
- Cassette [Maker]
- Shimano
- Cassette [Model]
- 105 7101
- Chain [Maker]
- Shimano
- Chain [Model]
- SLX M7100
- Chainring [Gearing]
- 50/34
- Crank [Maker]
- Shimano
- Crank [Model]
- 105 R7100
- Discipline Compatibility
- Road
- E-Bike
- No
- F Hub [Maker]
- Bontrager
- F Hub [Model]
- Bontrager alloy sealed bearing CenterLock
- Family
- Domane+
- FD [Maker]
- Shimano
- FD [Model]
- 105 R7150 Di2
- Fenders Mounts
- Yes
- Fork [Axle Type]
- 12x100mm Thru-Axle
- Fork [Brake Type]
- Disc
- Fork [Maker]
- Trek
- Fork [Material]
- Carbon
- Fork [Model]
- Domane SL carbon
- Fork [Wheel Size]
- 700c
- Frame [Hanger Standard]
- Brand-Specific
- Frame [Material]
- Carbon
- Frame [Tire Clearance]
- 38c mm
- Frameset
- No
- Gearing [Configuration]
- 2x
- Gearing [Kind]
- Conventional
- Gender
- Unisex
- Handlebar [Drop]
- 121 mm
- Handlebar [Kind]
- Drop
- Handlebar [Maker]
- Bontrager
- Handlebar [Material]
- Aluminium
- Handlebar [Reach]
- 80 mm
- Handlebar [Shape]
- Drop bar
- Headset [Maker]
- Trek
- R Hub [Maker]
- Bontrager
- R Hub [Model]
- Affinity Comp
- Rack Mounts
- No
- RD [Maker]
- Shimano
- RD [Model]
- 105 R7150 Di2
- Saddle [Maker]
- Trek
- Saddle [Width]
- 145 mm
- Seatpost [Kind]
- Rigid
- Seatpost [Maker]
- Trek
- Seatpost [Material]
- Carbon
- Seatpost [Offset]
- 20 mm
- Shifters [Maker]
- Shimano
- Shifters [Model]
- 105 R7170 Di2
- Shifting
- Electronic
- Stem [Angle]
- -7 degree
- Stem [Clamp Diameter]
- 31.8
- Stem [Maker]
- Bontrager
- Stem [Material]
- Aluminium
- Sub Family
- Domane SL
- Suspension Configuration
- Rigid
- Tires [Maker]
- Bontrager
- Tires [Width]
- 32 mm
- Wheels [Configuration]
- Front+Rear
- Wheels [Kinds]
- Tubeless Ready
- Wheelset [Inner Width]
- 35 mm
- Wheelset [Maker]
- Bontrager
- Wheelset [Material]
- Carbon
- Wheelset [Model]
- Aeolus Elite 35
- Product code
- 1940576 / 54293820080474
Size Guide
| Size | 47cm | 50cm | 52cm | 54cm | 56cm | 58cm | 60cm | 62cm |
|---|---|---|---|---|---|---|---|---|
| Rider Height (cm) | 152 - 158 | 158 - 163 | 163 - 168 | 168 - 174 | 174 - 180 | 180 - 185 | 185 - 190 | 190 - 195 |
| Inseam (cm) | 71 - 75 | 74 - 77 | 76 - 79 | 78 - 82 | 81 - 85 | 84 - 87 | 86 - 90 | 89 - 92 |
| Rider Height (ft. in.) | 5'0" - 5'2" | 5'2" - 5'4" | 5'4" - 5'6" | 5'6" - 5'9" | 5'9" - 5'11" | 5'11" - 6'1" | 6'1" - 6'3" | 6'3" - 6'5" |
| Inseam (inches) | 28" - 30" | 29" - 30" | 30" - 31" | 31" - 32" | 32" - 33" | 33" - 34" | 34" - 35" | 35" - 36" |
| Seat Tube (ctr-top) | 424 | 453 | 483 | 496 | 525 | 553 | 573 | 593 |
| Seat Tube (ctr-ctr) | - | - | - | - | - | - | - | - |
| Effective Top Tube | 512 | 521 | 534 | 543 | 559 | 574 | 586 | 598 |
| Actual Top Tube | - | - | - | - | - | - | - | - |
| Seat Angle (°) | 74.6 | 74.6 | 74.2 | 73.7 | 73.3 | 73.0 | 72.8 | 72.5 |
| Head Tube Angle (°) | 72.1 | 72.1 | 72.8 | 73 | 73.5 | 73.8 | 73.9 | 73.9 |
| Head Tube Length | 100 | 111 | 121 | 131 | 151 | 171 | 191 | 211 |
| Fork Rake | 45 | 45 | 45 | 45 | 45 | 45 | 45 | 45 |
| Chainstay Length | 410 | 410 | 410 | 410 | 410 | 411 | 411 | 412 |
| Wheelbase | 972 | 974 | 977 | 981 | 983 | 992 | 1001 | 1010 |
| Stack | 507 | 521 | 533 | 541 | 563 | 581 | 601 | 620 |
| Reach | 373 | 378 | 383 | 386 | 391 | 396 | 399 | 403 |

All measurements are in mm unless otherwise stated.
Reviews
Dom did a great job guiding me through the fitting and handling the final adjustments. Typically good Sigma service.
Shipping & Returns
Free UK delivery on orders over £50. Orders are dispatched within 1-2 working days and typically arrive 1-2 working days later.
Return unused items in their original packaging within 30 days of delivery. Return postage is £3.50.
Q & A
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About Trek
The best bike, ridden everywhere.
Founded in a Wisconsin barn in 1976, Trek has grown into one of the world's most recognised bicycle brands without losing the obsession that started it all: build the best bike, ride it further, share it with everyone.
Trek believes the bicycle is a simple solution to many of the world's most complicated problems. Every bike Trek builds — from the Madone race weapon to the Marlin trail bike — is made with that conviction. More riders, more often, on better bikes.









