Frameset
Frame
Lauf IRM* Seigla carbon frame, 12x142mm thru-axle
Fork
Lauf Grit 3rd gen Carbon, 12x100mm thru-axle, size tuned stiffness
Weight
~8.42 kg / 18.56 lbs (avg. for size medium)
Seigla Ultimate
The current Lauf Seigla replaced the True Grit in 2022 and sharpened Lauf’s position in the performance gravel segment. It keeps the brand’s Long 4 Speed geometry concept but updates the frame with more tire clearance and greater rear-end compliance, two changes that directly address the demands of modern gravel racing and fast mixed-surface riding. That combination points to a bike built not just for smooth gravel events, but for rougher, faster courses where traction, comfort, and stability matter as much as outright efficiency.
What distinguishes the Seigla is that it approaches gravel race design from a slightly different angle than many competitors. Rather than chasing ultra-short, twitchy road-derived handling, Lauf pairs a relatively long front-center layout with stable geometry and a compliant rear end. In the market, that puts the Seigla squarely among high-performance carbon gravel bikes aimed at riders who want race pace without giving up control on loose or choppy terrain. It is a purpose-built gravel race platform, but one with enough composure and clearance to suit big training days, endurance events, and aggressive all-surface riding.
$6,890
Image pending
Build
Size
| Stack | 564mm |
| Reach | 394mm |
| Top tube | 563mm |
| Headtube length | 129mm |
| Standover height | 789mm |
| Seat tube length | 528mm |
Fit and geometry
The Seigla’s geometry is clearly tuned for stability at speed. Across all sizes, the head tube angle is 70.5 degrees and the chainstay length is 425 mm, paired with a 65 mm bottom bracket drop. That is a conservative front-end number by road standards, but a deliberate one for gravel: the slack head angle and long wheelbase, which ranges from 1009 mm in XS to 1084 mm in XL, should give the bike a planted feel on descents and loose surfaces. The consistent 425 mm rear center also suggests balanced weight distribution rather than an overly snappy, short-back-end feel.
Fit-wise, the reach numbers are moderate to slightly long for a gravel race bike, from 378 mm in XS to 416 mm in XL, while stack runs from 523 mm to 623 mm. That supports Lauf’s Long 4 Speed concept by giving riders a roomy cockpit without forcing an extreme saddle-to-bar drop. Effective top tube lengths from 532 mm to 607 mm and relatively slack seat tube angles of 72.3 to 72.9 degrees further reinforce a stretched, stable riding position better suited to seated power and long-distance control than hyper-reactive steering. The result should be a bike that feels composed and confidence-inspiring, especially when speeds rise or surfaces deteriorate.
Full specs
Groupset
Shift levers
SRAM RED E1 AXS XPLR, wireless shifting
Rear derailleur
SRAM RED E1 AXS XPLR, 13 spd wireless shifting, Transmission-Style direct mount.
Cassette
SRAM RED XPLR XG-1391, 13speed, 10-46t
Chain
SRAM RAM RED, 118 links, 12/13spd
Crankset
SRAM RED E1 Wide DUB 40t
Bottom bracket
SRAM DUB BSA73
Front brake
SRAM Red Flat mount Hydraulic
Rear brake
SRAM Red Flat mount Hydraulic
Front rotor
160mm
Rear rotor
160mm
Wheelset
Front wheel
e*thirteen Piedmont Race Carbon (6-bolt, xDR freehub, tubeless ready)
Rear wheel
e*thirteen Piedmont Race Carbon (6-bolt, xDR freehub, tubeless ready)
Front tire
Goodyear Connector Inter Race 50mm, Tubeless Ready
Rear tire
Goodyear Connector Inter Race 50mm, Tubeless Ready
Cockpit
Stem
FSA V-Drive, 6°
Handlebars
Lauf Smoothie (XS/S: 40 M: 42 L/XL: 44)
Saddle
Fizik Aliante R5
Seatpost
FSA SL-K 27.2mm, Carbon
Builds
The Seigla range spans four builds, starting with the Core Transmission at $3,540 and topping out with the Ultimate at $6,890. In between are the Weekend Warrior Wireless E1 at $4,190 and the Race Wireless E1 at $5,390. That spread gives the model a fairly broad reach within the premium gravel category, from a comparatively accessible carbon race bike entry point to a flagship build aimed at riders who want a top-end complete bike.
Based on the build names, the lineup is structured around progressively more performance-oriented specifications, with the Wireless E1 models emphasizing SRAM electronic drivetrain options and the Race build positioned above the more general-purpose Weekend Warrior. The Core Transmission stands out as the price-led option, while the Ultimate is the no-compromise version. Without more detailed component lists, the clearest takeaway is that Lauf offers the same Seigla platform across a wide enough price range to appeal both to budget-conscious racers and to riders shopping for a premium ready-to-race build.