BMC Kaius 01
Gravel Race · closest size 54
Aggressive
Stack -3 mm, reach +2 mm versus this frame’s size M.
US list price: $6,199 to $12,399
GRAVEL RACE / MANUFACTURER CHART
Lauf Seigla Rigid
A gravel platform with a 1× drivetrain and room for high-volume tires.
Current published rigid-fork chart
- Type
- Gravel Race
- US list price, complete bikes
- $2,990 to $6,590
Read October 17, 2026 - Position, size M
- Aggressive
Longer frame reach than GnR’s fixed benchmark at this stack.
How the maker describes it
designed for ultimate speed in challenging conditions.
Maker presents the rigid platform with gravel-racing context; rigid-fork chart preserved.
Classification source: Lauf ↗. Read October 17, 2026.
Price scope and source
Complete Seigla Rigid builds with JAF 2nd gen carbon fork; Core Transmission through Ultimate Transmission. Model year: Not stated on checked page; current rigid-fork platform.
Displayed USD prices include reductions: Core Transmission 2990; Weekend Warrior Wireless E1 3590; Club 4090; Race Wireless E1 4690; Race Transmission 4490; Ultimate 5990; Ultimate Transmission 6590. Higher comparison prices, frameset and Grit suspension-fork builds excluded. All five frame stack/reach pairs match. Tax/shipping and size availability not verified.
Manufacturer price source ↗. Reviewed October 17, 2026.
Verified tire clearance
-
This is the rigid-fork chart. Lauf specifies up to 57 mm tire clearance. Standover is measured on 45 mm tires. Check saddle and cockpit setup separately.
Published frame dimensions
Lengths are in millimeters. Head angles are in degrees. Frame stack and reach do not include the stem, spacers or handlebars.
| Size | Stack | Reach | Wheelbase | Head angle | Standover | Position |
|---|---|---|---|---|---|---|
| XS | 523 | 378 | 1009 | 70.5° | 731 | Balanced |
| S | 537 | 383 | 1020 | 70.5° | 763 | Balanced |
| M | 564 | 394 | 1040 | 70.5° | 789 | Aggressive |
| L | 593 | 405 | 1061 | 70.5° | 811 | Aggressive |
| XL | 623 | 416 | 1084 | 70.5° | 840 | Aggressive |
Aggressive longer reach than the fixed benchmark at this stack · Balanced within the benchmark band · Relaxed shorter reach than the benchmark at this stack
Source: Lauf manufacturer’s chart ↗. Checked October 16, 2026.
Where this frame sits
Each dot is one published frame size. The green band is GnR’s fixed geometry benchmark. Frames to its right have longer reach at the same stack (Aggressive); frames to its left have shorter reach (Relaxed). The benchmark does not change with bike type or catalog additions.
Comparable frames from other brands
Each is the closest match to this frame’s size M (stack 564 mm, reach 394 mm) among current gravel frames from other brands.
Trek Checkmate
Gravel Race · closest size M
Balanced
Stack -4 mm, reach -2 mm versus this frame’s size M.
US list price: $8,199.99 to $11,999.99
Canyon Grail
Gravel Race · closest size S
Aggressive
Stack -6 mm, reach +0 mm versus this frame’s size M.
US list price: $3,499 to $8,999
Prices are the maker’s US list prices for complete bikes on the date shown, and include sale prices on that date. Ranges cover only the named builds, not every bike in a family. Framesets, tax and shipping are excluded. A displayed price, including an archived sale price, does not establish stock or a purchasable offer. Retailer prices and later changes are not tracked.
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.