Lauf Seigla is designed for maximum speed on gravel. Without compromise!

While other gravel bikes make you feel fast by rattling around on skinny tires and unforgiving frames, Lauf Seigla focuses on truly making you fast.

The class-leading suspension and tire clearance on Seigla make it glide over road imperfections, with minimal energy loss. You will notice it through comfort and grip*. Your GPS-unit will notice it through personal Strava records!

A good bike can be designed by diligently playing by the book. While making a great bike, that outshines the competition, demands new thinking. Unshackled by tradition and convention.

* Probably feeling slower! As the human body uses NVH (noise, vibration and harshness) to measure speed.

Obsidian Black - Glossy

Basalt Black - Glossy

Glacial White - Glossy

Silfra Blue - Satin

Moss Green - Satin

Moss Campion - Glossy

Lauf IRM* Carbon Frame / Grit 3rd gen Carbon Suspension Fork / Smoothie Handlebar / Wireless Apex Shifters and S1000 Transmission RD / e*thirteen XCX Wheels

156-165cm  5'1.4"-5'5" (X-small)

166-174cm  5'5.35"-5'8.5" (Small)

175-182cm  5'8.9"-5'11.65" (Medium)

183-190cm  6'0.05"-6'2.8" (Large)

191-200cm  6'3.2"-6'6.74" (X-large)

Frame

Fork

Handlebar

Rear Derailleur

Shifters

Brakes

Crank

Power meter

Saddle

Seatpost

Wheels

Tires

Stem

Headset

Bartape

Cassette

Chain

Bottom Bracket

Weight

Core Transmission

Lauf IRM* Carbon Frame / Grit 3rd gen Carbon Suspension Fork / Smoothie Handlebar / Sram Transmission GX RD / Single-sided Rival Power Meter / e*thirteen Piedmont Race Alloy

Bottom bracket

Hanger

Weekend Warrior Transmission

Lauf IRM* Carbon Frame / Grit 3rd gen Carbon Suspension Fork / Smoothie Handlebar / SRAM Rival E1 - 13 speed / Single-sided Rival Power Meter / e*thirteen Piedmont Race Alloy

Weekend Warrior Wireless E1

Lauf IRM* Carbon Frame / Grit 3rd gen Carbon Suspension Fork / Smoothie Handlebar / Sram Transmission X0 RD / Single-sided Quarq Power Meter / e*thirteen Piedmont Race Carbon Wheels

Race Transmission

Lauf IRM* Carbon Frame / Grit 3rd gen Carbon Suspension Fork / Smoothie Handlebar / SRAM Force E1 - 13 speed / Single-sided Power Meter / e*thirteen Piedmont Race Carbon Wheels

Race Wireless E1

Lauf IRM* Carbon Frame / Grit 3rd gen Carbon Suspension Fork / Smoothie Handlebar / 13 Speed Transmission-Style Red AXS XPLR / Dual-sided Power Meter / e*thirteen Piedmont Race Carbon Wheels

Ultimate

Lauf IRM* Carbon Frame / Grit 3rd gen Carbon Suspension Fork / Smoothie Handlebar / 13 Speed Transmission-Style Red AXS XPLR / Dual-sided Power Meter / Zipp303 XPLR SW Carbon Wheels

Ultimate R

Lauf IRM* Carbon Frame / Grit 3rd gen Carbon Suspension Fork / Smoothie Handlebar / FSA Orbit, IS 42/52 (45°lower) Headset / Front Thru Axle / Rear Thru Axle / SRAM UDH / SHIPS ONLY TO UK, USA & Canada

Frameset

USA: Prices in USD. Sales tax / VAT is added during checkout, then you'll conveniently see your final price.

Other markets: Priced in USD,  You'll see your final price when tax is added during checkout.

Tracked Express shipping of bikes is 99 USD.

Sales Tax / VAT and Shipping

"Does Lauf's Grit fork render other gravel suspension forks redundant?"  (Spoiler alert: They think it does)

"It's a gravel race bike from the future"

“Buy if... you want a gravel bike that will fit fatter rubber than the competition whilst being both fast and comfortable.”

“Lauf has taken its successful True Grit formula and added comfort, but not at the expense of speed.”

“The first impressions of the bike are solid and the versatility will reach from podium racer to casual adventure seeker.“

"Lauf’s prices are so great that you’d pay far more for a comparable build from Trek, Specialized, or another legacy brand."

"Lauf even spanks the big consumer-direct brands’ pricing."

"...And that’s why the Seigla, with its suspension, is a perfect gravel bike for my rides."

Reviews

* If you are on the edge of a given size: Consider sizing up if you prefer a relaxed upright-fit and/or you have long legs, consider sizing down if you prefer an aggressive race-fit and/or you have short legs.

Still not sure about your size? We offer worry-free-sizing through our True Lauf 30 day test period.

In pictures

Seigla is shaped by the rough gravel roads of the Icelandic highlands. It's designed for ultimate speed in challenging conditions.

Want to experience Seigla's natural habitat? Come join us for The Rift Gravel Race!

Breathtaking views and epic gravel roads, in the remote wild Icelandic highlands. There is simply no gravel race like The Rift.

The Rift Gravel Race

It’s no coincidence gravel cyclists all over the world praise Lauf’s Grit forks. They are designed for the high frequency vibration seen in gravel riding. They iron out road imperfections like no other.

Lauf’s Grit forks are also far lighter than the competition, more energy efficient and they don’t require any maintenance.

Traditional telescopic suspension forks are designed to absorb large impacts, and they are good at that. While they are inherently unable to come close to Lauf Grit’s response to higher frequency vibration. They simply have too much friction and inertia, no matter how they’re tuned and tweaked.

Our Grit 3rd gen has more tire clearance than ever, plus broader shoulders for increased lateral stiffness. How much weight does this add from previous generations? None!

The use of a lighter core material for its rear parts (dropouts) offsets the weight we added to the fork crown and shoulder area. This doesn’t just keep the weight in check, even more importantly it lowers the (already lowest in class) unsprung weight.
Lower unsprung weight = Faster response to impacts = More traction, speed and comfort.

Lauf Grit 3rd gen

When we launched the True Grit back in 2017, its geometry changed the gravel game. It uniquely combines the fast fit and feel of a road bike, with the stability and control associated with XC mountain bikes. It’s a bike that enables you to ride faster, and at the same time makes you long for that speed.

Lauf Seigla has that same legendary geometry, only now combined with equally legendary tire clearance and more rear compliance…

Long 4 Speed Geometry

It’s no problem to make a bike with massive tire clearance. The tricky thing is doing so without sacrificing other desirable traits. Our goal for the Seigla was to keep the go-fast-attitude of our older True Grit bike, with its short 425mm chainstays and fast rider position, while leaving no stone unturned in our hunt for tire clearance. The headline grabbing result ended up becoming: Up to 57mm 700c tire clearance, or equivalently 2.25” 29ers.

Sacrifice clearance between chainring and chainstay. It’s unacceptable for a chainring to be so close to a chainstay that a dropped chain damages the chainstay.

Resort to a dropped or elevated drivetrain-side chainstay. For reasons we cover below.

Fitting a Maxxis Reckon Race 2.25” 29er still leaves good clearance around the tire.

Industry leading tire clearance

The absence of a front derailleur mount is not just that, the absence of something. Its absence brings the presence of approximately 5mm extra tire clearance. Using space that would otherwise be reserved for an inner chainring, even though you’re riding a 1x configuration. As we strongly prefer 1x on our bikes for its simplicity, light weight and robustness, this “tradeoff” was an obvious choice to make.

Single for a reason

While most gravel bikes use a road-sized bottom bracket shell, e.g. BSA 68, we opted for the 5mm wider BSA 73. We do however not do this to then go ahead and use MTB cranksets with their wide q-factors (L/R distance between pedals). This would have detracted from the go-fast attitude of the Lauf Seigla.

We can use BSA 73 because we’ve worked with SRAM to get fitting road cranksets that maintain a slim q-factor while also providing additional 5mm tire clearance.

These, in our opinion, gravel-optimal cranksets could also be used with a BSA 68 bottom bracket shell, with the help of 2x2.5mm spindle spacers. However, this would be painfully sub-optimal. The narrower BSA 68 frame would have inferior strength/stiffness/lightness due to:
a) The narrower connection to the crankset requiring thicker carbon in the bottom bracket shell for given strength/stiffness, and
b) The wider BSA 73 shell makes for a smoother fiber flow back to the chainstays = less structural imperfections and less stress concentration.

Going for BSA 73 on gravel bikes can only catch on. Look at it this way, if BSA 73 was already the norm on gravel bikes, nobody in their right mind would ever suggest making it 5mm narrower!

BSA 73 (not 68)

The drivetrain-side chainstay on Seigla is solid carbon in its most squeezed location, between the chainring and the tire. We combined this with an oversized vertical dimension to get to the astounding 6mm width (or the lack thereof), maximizing tire space. An added benefit of this solid (and slim) chainstay is better than ever impact resistance. No dropped chain is going to mess with solid 6mm of carbon fiber!

Solid chainstay on drivetrain side

This might sound like a strange selling point. “Normal” straight chainstays. But we didn’t choose straight chainstays because we overlooked dropped or elevated ones.
Dropping or elevating the drivetrain-side chainstay is a common method to squeeze in more tire clearance on gravel bikes.

We didn’t opt for dropped chainstays because: 

Dropped chainstays are structurally inferior. As a straight “beam” is better than a kinked one. Especially when the kink can also lead to quality defects in fiber flow.

Dropping both chainstays has a negative impact on the compliance of a bike frame. The “suspension” path of the rear axle turns further forward, which is clearly not good when dealing with incoming hits from below.

Dropping just the drivetrain-side chainstay makes the rear end stiffer, and makes the (very limited) chainstay flex imbalanced left/right.

We didn’t opt for elevated chainstays because:

When elevating both sides, the bracing angle of the rear triangle gets much smaller. Resulting in drastically higher stress on frame members. Hence, greatly increased wall thickness becomes required, with associated additional weight.

If only elevating one side, it makes the rear end stiffer, and makes the (very limited) chainstay flex imbalanced left/right.

Straight chainstays!

In the Lauf dictionary ICE stands for, Integrated Compliance Engineering.

What does it mean when we’ve ICE’d something? It means we focused our engineering efforts on achieving controlled suspension (flex/compliance), without resorting to more complicated solutions adding weight and maintenance.

There is an old saying in Icelandic “don’t cross a river for water” (“ekki sækja vatnið yfir lækinn”). When there is a chance to do something simply, don’t complicate it! This holds true to this day.

ICE’d in the front – Our Smoothie handlebar has long been Lauf’s flagship of the ICE’d concept.
Many choose carbon handlebars over aluminum ones to get that extra compliance (flex). With the Smoothie we took things further. Our novel use of impact resistant high-end glass fibers in the central portion of the Smoothie translates into 2x the compliance (flex) of competing carbon bars! Resulting in a noticeable ride quality improvement. Without links, pivots, extra structures or proprietary standards.

ICE’d in the back
One of our top-priorities when developing the Lauf Seigla was for the rear to better match the front’s comfort, traction and speed. Offered by the Grit fork and the Smoothie handlebar.

We’re doing it through a partnership of 5 things:

The slim rear-portion of the top tube transforms the top tube / seat tube junction to a virtual pivot. For maximum effect, the use of a standard seat-clamp means that the virtual pivot is as close to the optimal (rearmost) location as possible.

The vertically slim seatstays allow twist up/down while the generous lateral dimensions resist lateral flex.

The dropped seatstays channel the ground force so that it bends the seat tube (since 1. and 2. above permit), resulting in a back/down movement of the saddle and a little dose of rear axle travel to go with it.

The offset and tilted seat tube doesn’t just provide tire clearance, it translates into a (more desirable) more downwardly suspension path for the saddle. Note that the rearwards portion of seatpost flex doesn’t add comfort, it is only the downwards component that counts.

More exposed seatpost than on the True Grit and Anywhere (+14-20mm, depending on frame size).

As a result, Lauf Seigla has approximately 3x the saddle-towards-rear-axle compliance of the True Grit.

ICE’d

Some gravel bikes resort to the smaller 650b (27.5”) wheel size standard to squeeze in more tire width. Seigla doesn’t. This was never an option for our development of Lauf Seigla. The larger diameter 700c (29”) standard simply rolls faster on rough roads.

Think of a small-wheeled shopping cart on a rough parking lot. Imagine how much easier it would be to push that shopping cart if it had bigger wheels. The same physics apply to 650b vs 700c for gravel riding.

We’d argue that rolling fast is pretty important for a go-fast gravel bike.

No plan (650) B

Stands for Lauf’s Impact Resistant Modulus fiber layup. We like to achieve our low frame and fork weights through careful shape and layup designs combined with good manufacturing methods. Rather than using more brittle high-modulus or intermediate-modulus carbon fibers.

Yes, we are boasting about exclusively using “normal” carbon fiber in our products!

By doing so, we are rejecting shortcuts to lower frame weights. Higher modulus carbon makes it easier to pass compulsory fatigue tests, as microcracks don’t develop as much in/around the stiffer fibers. The stiffer fibers effectively “lock” frame members from flex. This would however demand sacrifices we’re not ready to make. Impact resistance of higher modulus fibers is far worse than for standard modulus carbon, and the stiffer fibers can make a bike feel overly harsh.

We believe a carbon gravel bike should not just be light, it should also be reliable. Lauf frames, forks and handlebars represent our preferred combination of the two.

IRM fibers

Designing a bike is a balance art. You need to decide what things are worth adding. Because adding comes at a cost. We are focused on keeping things clean and focused.

We added everything you might need and want for that gravel race: 3x bottle cage mounts and a bento box top tube mount. Obviously, there is also the option of using a frame bag, saddle bag or a handlebar roll.

We chose not to add rack or fender mounts, nor fork luggage mounts. Because, why would we? There are perfectly good clip-on options out there, and you don’t want these mounts standing in your way when racing or when going for that local KOM/QOM.

The mounts you want

We were a bit torn on this one. We want to keep things as focused as we can, and we honestly think dropper posts are rarely appropriate on a gravel bike. They inevitably make a bike heavier and require maintenance. Plus, they would reduce our ICE’d rear compliance. However, at the same time we recognise that some (few) actually ride gravel bikes where a dropper is beneficial. So, during our development of Seigla we reached out to SRAM and got to know that they had a wireless one coming up. Perfect! This meant we could avoid adding “unclean” routing holes to our frames. Case closed.

Dropper “compatible”

Our gravel bikes pass MTB strength and durability testing. We also do not take the shortcut of using lighter but more brittle high-modulus fibers in our layup designs.

A broken frame is not a good frame, no matter how light it might have been.

Our gravel bikes are designed to deal with tough conditions and heavy use. Within that envelope, we chase the lowest weight possible. This is achieved through clever shaping, sophisticated manufacturing methods and attention to detail.

Seigla Medium frame, ready to paint, without parts = 1030g*.
Seigla Medium frame, Obsidian Black, with seat-clamp, thick rubber chainstay protector and all bottle cage screws = 1163g*.

Grit 3rd gen, ready to paint, without axle, full length uncut steerer = 827g*.
Grit 3rd gen, Obsidian Black, without axle, full length uncut steerer = 857g*.

JAF 2nd gen, ready to paint, without axle, full length uncut steerer = 412g*.
JAF 2nd gen, Obsidian Black, without axle, full length uncut steerer = 428g*.

*Average weights. Each unit can differ slightly.

Lowest weight possible, at the desired strength

Seigla [Say-glaa]

*   +/- 0.1° depending on saddle height, slacker when higher, steeper when lower.

(Q) Standover height is measured straight above the bottom bracket on 45mm Maxxis Rambler tires.

A fast but comfortable fit.
The fit of the Seigla is optimized for “weekend warriors” and racers. It’s made for the optimum balance of aerodynamics and long-distance comfort. The short headtube enables an aerodynamic bike fit, while the generous headset spacers (35mm) give superb tuneability.

Your correct size is easy to find.
The Seigla bikes have a wide setup window for the “Stack to Handlebar” (the most defining dimension for how “aggressive” a bike fit is). All Seigla bikes come with 35mm of headset spacers and a stem that can be flipped up/down for extra tuneability. Hence, there is a generous overlap between bike sizes so a rider that chooses a bike for his size according to the chart above should easily find his optimal setup.

Zero-setback seatposts.
Lauf Seigla has a slack effective seat tube angle (approx 72.5°) and are thus set up to be used with zero-setback seatposts.

Dimensions are based on 6mm of sag on Lauf Grit suspension fork.

All measurements are shown in mm, except where stated.

Geometry

Setting up and taking care of your Lauf is essential. If in doubt, please contact us here 

Ultimate R

Size Chart

xs

s

m

l

xl

Full Specs

Ultimate R

In pictures