Ultimate FI Frame
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The original benchmark for titanium road race bikes, built with our legendary Superform SL tubset for ultimate all-around comfort and performance.
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YOUR BUILD HIGHLIGHTS
SURGICAL HANDLING
Nothing handles like an Ultimate Disc FI. Sporting a proven road race geometry, the Ultimate FI Disc can dive into corners, carve on a rail, climb with grimpeurs, and sprint with unyielding stiffness. Quite simply, the Ultimate Disc FI does it all.
PERFORMANCE-DRIVEN TUBE SHAPING
Litespeed’s longest-standing road race ride remains as it ever was on the hunt for the front of the race. And that’s achieved by way of masterfully shaped titanium tubes. From an aero-shaped teardrop downtube to our quadrilateral-formed top tube delivering exceptional stiffness, every tube has been cold-worked with a single purpose in mind: smooth, fast road performance.
TIRE CLEARANCE
Be ready for it all. With tire clearance up to 35mm on disc brakes, the Ultimate Disc FI can run fast and far on tires and wheels with the volume and compliance you demand. Tackle anything from technical crits to big, carving descents to rough broken roads.
EXPLORE THE DETAILS
Frame & Fork Specs
Frame
| Frame Material | Superform SL 3AL/2.5V Titanium Tubeset |
|---|---|
| Frame Weight | 1,240g (Size M) |
| BB Standard | PF30 (T47 Optional Upgrade) |
| Seatpost Diameter | 31.6mm |
| Derailleur Hanger | UDH |
| Front Derailleur Mount | 34.9mm Clamp-on |
| Cable Routing | Fully-Integrated |
Axle Specs
| Front Spacing | 12x100mm |
|---|---|
| Front Axle Spec | M12 x 1.5, 120-125mm |
| Rear Spacing | 12x142mm |
| Rear Axle Spec | M12 x 1.0, 164-167mm |
Drivetrain
| Max Chainring Size (2x - Shimano) | 54/40t |
|---|---|
| Max Chainring Size (2x - SRAM) | 56/43t |
| Max Chainring Size (1x) | 46t |
Brakes
| Rotor Max Size (Front) | 160mm |
|---|---|
| Rotor Max Size (Rear) | 160mm |
Fork
| Fork Offset | 47mm |
|---|---|
| Rigid Fork Length | 381mm |
Tire Clearance
| Max Tire Size | 700 x 35mm |
|---|
Mounts
| Downtube Water Bottle Bolts | 2 |
|---|---|
| Seattube Water Bottle Bolts | 2 |
| Rack Mount | No |
| Size | XS | S | M | ML | L | XL |
|
The height of your bike’s cockpit. Bikes with taller stack height provide a more upright and comfortable riding position. Lower stack height provides a lower and more aggressive riding position.
|
51.5 | 53 | 54.5 | 56.5 | 59 | 62 |
|
The length of your bike’s cockpit. Bikes with longer reach stretch you forward for a more aggressive riding position. Shorter reach shifts your weight back for a more relaxed riding position.
|
37 | 37.5 | 38 | 39 | 39.5 | 40 |
|
The distance from the ground to the midpoint of the top tube. It’s good to have adequate clearance between the top tube and the base of your torso to make it easier to ride and come to a stop safely.
|
71.9 | 73.5 | 75.3 | 77.4 | 79.6 | 82.4 |
|
A longer top tube will feel more stretched out. A shorter top tube will feel more compact. Top tube length can help determine fit, but stack and reach are the most reliable measures for modern bikes.
|
51.3 | 52.2 | 54.1 | 55.7 | 57.5 | 59 |
|
A steeper (closer to 90°) seat tube angle moves the saddle forward to promote a more aggressive riding position. A slacker angle moves it backward for a more relaxed position. The seat angle of each bike is optimized for its intended riding style.
|
74.5° | 74.0° | 73.5° | 73.0° | 73.0° | 73.0° |
|
Seat tube length is measured from the center of the BB to the top of the seat tube. Seat tube length can help determine bike fit, but it is most useful for determining how long your seatpost needs to be.
|
45.5 | 47.5 | 49.5 | 51.5 | 53.5 | 55.5 |
|
A steeper (closer to 90°) head tube angle provides quick, responsive steering but less stability at high speeds. A slacker angle increases stability but can feel unresponsive at slow speeds. The head angle of each bike is optimized for its intended riding style.
|
72.0° | 72.5° | 73.0° | 73.0° | 73.0° | 73.0° |
|
The length of the head tube will raise and lower a rider’s position on the bike, but stack height is a better measure for this. Head tube length is useful for determining how long your fork steerer needs to be.
|
8.8 | 10.2 | 11.6 | 13.7 | 16.3 | 19.4 |
|
Increased BB drop lowers your center-of-gravity to improve stability for cornering and rough terrain. Reduced BB drop improves agility and clearance to avoid pedal strikes. The BB drop of each bike is optimized for its intended riding style.
|
7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 |
|
Measured from the center of BB to the center of the front axle. Lengthening the front center increases stability and can reduce toe overlap. Shortening the front center increases agility and can increase toe overlap.
|
56.8 | 57.3 | 57.8 | 59.4 | 60.7 | 62.1 |
|
Shorter chainstays increase agility and allow riders to be more dynamic with their weight in corners. Longer chainstays increase stability at speed and over rough terrain. The chainstay lengths of each bike are optimized for its intended riding style.
|
41.5 | 41.5 | 41.5 | 41.5 | 41.5 | 41.5 |
|
A shorter wheelbase increases agility and provides quicker handling. A longer wheelbase increases stability at high speeds and over rough terrain. The wheelbase of each bike is optimized for its intended riding style.
|
97.3 | 97.9 | 98.3 | 99.9 | 101.2 | 102.6 |
|
Fork offset, or fork rake, affects trail. Less fork rake increases trail for slower handling but greater stability. More fork rake decreases trail for faster handling. The fork offset of each bike is optimized for its intended riding style.
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4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 |
|
High Trail provides more stability at speed. Low trail provides faster, more agile steering. We optimize Trail for each bike by tuning our fork rakes and head angles to match the bike’s intended riding style.
|
6.3 | 5.9 | 5.6 | 5.6 | 5.6 | 5.6 |
XS
S
M
ML
L
XL
147cm
58
-
157cm
62
157cm
62
-
165cm
66
165cm
66
-
175cm
69
173cm
68
-
180cm
71
178cm
71
-
188cm
74
188cm
74
-
198cm
76
LIFETIME WARRANTY
Ride with peace of mind knowing that your Litespeed bike is covered for life by our rider-first warranty.
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EASY FINANCING
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EXPERT HELP
Have questions? Our team of experts is ready and waiting to help. Simply call, email, or chat with us and get the answers you seek.
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