Lauf Seigla Rigid
Gravel Race · size M
Aggressive
Front end and reach about the same.
$2,990 to $6,590
GRAVEL RACE
Factor Aluto
A gravel race bike built for speed on mixed surfaces. Riding position: Balanced in the smallest size to Aggressive in the largest.
- Type
- Gravel Race
- Price, complete bikes
- $7,899 to $9,799
- Sizes
- 49 to 61 (6)
- Position, size 54
- Balanced
- Tire clearance
- 47 mm
How the maker describes it
In Factor’s words: “the race-capable gravel bike for riders who do it all.”
GnR lists it as Gravel Race: a gravel race bike built for speed on mixed surfaces.
Source: Factor, read October 19, 2026.
Published frame dimensions
Frame measurements for each size, in millimeters; head angles in degrees. Stack and reach describe the frame only. Stem, spacers and handlebars change where your hands end up.
| Size | Stack | Reach | Wheelbase | Head angle | Standover | Position |
|---|---|---|---|---|---|---|
| 49 | 530 | 377 | 992.6 | 71.5° | 749.5 | Balanced |
| 52 | 547 | 385 | 1002.5 | 71.9° | 770 | Balanced |
| 54 | 565 | 393 | 1016.5 | 72° | 793 | Balanced |
| 56 | 585 | 402 | 1035 | 72° | 812 | Aggressive |
| 58 | 605 | 412 | 1053 | 72° | 833 | Aggressive |
| 61 | 625 | 422 | 1070 | 73° | 850.5 | Aggressive |
Aggressive more stretched out for its height · Balanced in between · Relaxed more upright for its height
From Factor’s geometry chart, checked October 19, 2026. Visit Factor ↗
Where this frame sits
Each colored dot is one Aluto size; gray dots are other current gravel frames. Dots right of the green band are more stretched out for their height; dots left of it are more upright. 3 of 6 Aluto sizes sit inside the band; 3 are more stretched out.
Price and builds
$7,899 to $9,799. Aluto SRAM Force XPLR, Campagnolo Record 13X and SRAM Red XPLR builds.
Price rises with the parts: drivetrain, wheels and cockpit. Compare builds on Factor’s site before buying.
Factor US list prices, October 20, 2026. Prices and stock change often.
Comparable frames from other brands
The closest match to a size 54 Aluto from other brands, among current gravel frames. Same-type frames are listed first.
Trek Checkmate
Gravel Race · size M
Balanced
Front end and reach about the same.
$8,199 to $11,999
BMC Kaius 01
Gravel Race · size 54
Aggressive
Front end and reach about the same.
$6,199 to $12,399
Maker US list prices for complete bikes on the date checked.
Frame details
- Tire clearance
- 47 mm
Factor states a performance maximum of 47 mm as measured rear tire clearance and lists MAX TIRE CLEARANCE 47mm measured. - Mounts
- In-frame down tube storage for tubes, CO2 cartridges and a patch kit, with a down tube storage bag included, per Factor’s page. Electronic drivetrains and hydraulic brakes only. No load limit is implied.
- Geometry chart
- Factor page chart; model year not stated
Exact six-size chart from the owner’s print of the Factor Aluto page (printed October 19, 2026, page 3). The print hides the BB drop and trail rows behind the page header; neither is stored. Wheelbase and standover keep Factor’s decimals. Factor does not define where stack, reach or standover are measured. No model year is stated on the page.
Find alternatives to this frame
Use this exact chart as your reference, select your size, then explore similar dimensions or a deliberate position change. Confirm the frame generation matches your bike before using it.
Match this bike ↗Does similar geometry mean the same fit?
Similar frame dimensions are a starting point. Saddle height and setback, seat-tube geometry, stem length and angle, headset spacers, handlebars and control position affect the completed bike. Review those details before buying.