Free 2-Day Shipping on Orders Over $50* — Limited Time Only Save 25% or More on Pearl Izumi »
Compiling options for this bike.
It'll be just a moment...
Sale $1,610.00 $3,500.00 54% off

Item # MLN0009

Find your size

Note: Actual inseam is not the same as pant inseam.  How to measure

We recommend a size in this bike.

Edit More details

Our size calculator is a starting point for finding the right size for you. To get personal advice talk to one of our fit experts at 1.877.550.2639 or chat now

Select options
  • Select options
  • Titanium, 51cm ($1,610.00)
Compiling options for this bike.
  • 100% Guaranteed Returns
Item # MLN0009

Selected Option:

Add to cart save for later
Customer Service Represintative
Need help?

Ask an expert.

  • 1.888.276.7130
  • Live chat

Back with a boom.

Whether you're chronically checking online bike galleries, or you've been around long enough to remember titanium's heyday, your attention has been fixated on the Merlin Extralight. If you fall into these categories, or you simply fell in love at NAHBS, we're elated to tell you that the need for pining is over. That's right, the Merlin Extralight is back, and better yet, so is its 3-2.5 tubing.

The Extralight features the same double-butted 3Al-2.5V titanium (3-2.5) tubing of yesteryear. But, to refresh your memory, we'll shed some light on this designation. Simply put, it refers to the percentages of the material composition, with the 'three' being 3% aluminum, the '2.5' being 2.5% vanadium, and the remaining 94.5% being that of titanium. In its original application, 3-2.5 was used throughout the aerospace industry for its exceptional strength-to-weight ratio and high resistance to corrosion. Today, however, you'll find its primary application in the high pressure hydraulic lines of airplanes, and of course, in the Merlin Extralight.

Still, strength and low weight considered, the question begs to be asked, why 3-2.5 titanium? Well, it all comes down to its ride quality. In comparison to other alloys, you'll find that 3-2.5 features a higher strength-to-weight ratio, lower sidewall density, and a higher elastic modulus, all in exponential figures. But, in layman's terms, this means that the Extralight is lighter, stiffer, and stronger than other alloys -- even the exotics like scandium and magnesium. However, we feel that these terms are simply thrown around far too often, so let us explain how these actually translate to ride quality.

3-2.5 expresses less deformity under stress than aluminum, but more so than carbon fiber. This characteristic translates to a highly responsive and direct feel under load. However, unlike carbon fiber, which strategically redirects shock energy throughout the frame, 3-2.5's elastic modulus creates a natural dampening of vibration and shock. The Extralight benefits from less abrasive handling without diminishing any of its natural stiffness.

And this brings us onto the subject of engineered-in rigidity. Merlin brought the Extralight into the modern age by increasing the diameter of the tubing to 1.375in at the top and seat tubes and 0.875in at the seatstays. You'll also find that this generation features a 44mm oversized head tube. Additionally, Merlin designed the bike around a PressFit 30 bottom bracket. This allows for the use of a contemporary drivetrain, which will guarantee efficient power transfer along the S-bend chainstays to the rear wheel. Merlin also took the liberty of varying the downtube's diameter to correspond with frame size. As a result, the smaller frames feature a 1.5in diameter down tube, while you'll find 1.75in tubes on the larger frames. The head and seat tube angles are likewise size-specific. Essentially, this tunes the characteristics to each frame size, creating a seemingly custom feel. And just as importantly, the aforementioned updates make the Extralight stiffer, increasingly responsive, and more compliant than any iteration before.

But, of course, we can't discuss the topic of Merlin without mentioning its uncompromising level of craftsmanship. Every Extralight features American sourced titanium tubing and is hand-built in the USA. Of course, the Extralight's welds are seamless, and due to 3-2.5's natural resistance to corrosion, its beautiful, brushed finish will never rust -- even for those living seaside. Given its strength, durability, and eternal good looks, Merlin has created a timeless ride that will long outpace the zeitgeist, quite possibly making it the last bike that you'll ever need.

The Merlin Extralight is available in the color Brushed Titanium and in the sizes 50.3, 51.5, 52.5, 54.5, 55.7, 57.5, and 58.7cm. Please note that the sizing numeral references the top tube length of the frame. To be certain on fit, please reference our size chart.

  • 3-2.5 titanium frame
  • PressFit 30 Bottom Bracket
  • 44mm oversized head tube
  • ENVE Composites Carbon 2.0 tapered road fork
  • Chris King Inset 7 headset
  • Thomson seatpost collar

Tech Specs

Frame Material:
3-2.5 titanium
Enve Tapered 2.0
Fork Material:
carbon fiber
Headset Included:
Bottom Bracket Type:
Pressfit BB30
Cable Routing:
Front Derailleur Mount:
Compatible Components:
SRAM, Shimano, Campagnolo
Seatpost Diameter:
31.6 mm
Recommended Use:
road race
Manufacturer Warranty:

sizing chart

ExtraLight size by rider height


Geometry chart


Geometry Chart

Seat Tube


Effective Top Tube







Head Tube


Head Tube Angle


Seat Tube Angle


Bottom Bracket Drop


Chainstay Length


50cm 50.5cm 50.3cm 50.9cm 35.8cm 74.4cm 11.2cm 70.0° 74.5° 7.45cm 40.8cm
51cm 51.5cm 51.5cm 51.6cm 36.9cm 75.4cm 11.7cm 70.5° 74.5° 7.45cm 40.8cm
52cm 52.5cm 52.5cm 52.7cm 37.2cm 76.3cm 12.5cm 71.5° 74.0° 7.45cm 40.8cm
54cm 55.0cm 54.5cm 54.5cm 38.3cm 78.1cm 14.0cm 72.5° 73.5° 7.45cm 41.0cm
55cm 57.5cm 55.7cm 56.5cm 38.9cm 80.5cm 16.0cm 72.75° 73.5° 7.45cm 41.0cm
57cm 59.5cm 57.5cm 58.6cm 39.6cm 82.3cm 18.0cm 73.5° 73.0° 7.45cm 41.2cm
58cm 62.5cm 58.7cm 60.6cm 39.7cm 84.1cm 18.8cm 73.5° 72.5° 7.45cm 41.4cm

Reviews & Community


Write a review

    Add a:
  • Photos
  • Videos

No file chosen

Rather attach a photo from your computer?


Only jpg, jpeg, png, gif or bmp files please.

Submit ReviewCancel