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Blackwater Bicycles

3 Notch Bike - Traditional Tubing Full Custom Titanium Road, Gravel, Monster Cross

3 Notch Bike - Traditional Tubing Full Custom Titanium Road, Gravel, Monster Cross

$2,199.00 USD
$2,199.00 USD
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Blackwater Bicycles / Custom Titanium Gravel

3 Notch:
The Blank Canvas

The 3 Notch is where your ideas take form — a titanium gravel platform engineered to be shaped entirely around you. Start with one of our proven stock geometries, then tune the details for your terrain, your fit, your riding style, and the bike you have always wanted to build.

Custom Geometry, fit, mounting options, routing, and ride character can be shaped around your exact needs.
415mm Updated stock chainstay length keeps the platform responsive while leaving room for real gravel setups.
395mm Modern gravel fork axle-to-crown standard for confident handling and larger tire compatibility.
Yours Built as a one-of-a-kind Blackwater machine, not a stock frame with a few small options.
Blank Canvas Platform

Start with a proven shape. Make it entirely yours.

The 3 Notch starts as a clean titanium foundation, then becomes whatever you need it to be. Build it as a fast gravel racer, a long-distance all-road bike, a fully loaded bikepacking rig, or something completely your own.

Geometry, tire clearance, mounts, routing, finish, and component fit can all be tuned around the way you ride and the landscapes you chase.

Fit-Tuned Choose a stock size or adjust reach, stack, angles, and contact points for your exact body position.
Terrain-Tuned Design the frame around fast gravel, mixed roads, bikepacking, chunky terrain, or all-day adventure.
Build-Tuned Plan tire clearance, drivetrain choice, mounts, routing, and cockpit setup before the frame is made.
Purpose-Built A ground-up custom titanium build shaped around your ride, not someone else’s stock idea.
How It Works

Your dream bike starts with the details.

Pick from one of the stock geometries below, then decide what should stay, what should change, and what needs to be built around your riding style.

1. Choose a Base Size Start with the closest stock fit from Extra Small through Extra Large.
2. Tune the Numbers Adjust geometry, tire clearance, handling, mounts, and fit details.
3. Pick the Build Select drivetrain, wheels, cockpit, fork, finish, and custom features.
4. Make It Yours The result is a one-of-a-kind Blackwater built around your vision.
Why 3 Notch Exists

Not a stock frame. A starting point.

The 3 Notch is for riders who know a bike should match the person riding it. Instead of forcing your fit, terrain, and goals into a fixed production frame, 3 Notch gives you a proven titanium platform that can be shaped into the bike you actually want.

Custom Geometry

Start from a stock size or tune reach, stack, angles, chainstay length, bottom bracket drop, and fit numbers to match your riding position.

Custom Features

Add the mounts, routing, tire clearance, drivetrain compatibility, and fork details that make sense for your exact build.

Custom Purpose

Build it for speed, comfort, distance, bikepacking, racing, all-road use, or a balanced gravel setup that does a little of everything.

Geometry

Stock geometry, ready to customize.

Use these numbers as the starting point for your 3 Notch build. The stock geometry below has been updated with a 415mm chainstay length and 395mm fork axle-to-crown.

Fit & Geometry

Measurement XS
50cm		 S
52cm		 M
54cm		 M/L
56cm		 L
58cm		 XL
60cm
Reach 375 380 385 395 405 415
Stack 565 570 580 595 605 620
Effective Top Tube* 526 533 546 560 578 593
Seat Tube Length 430 450 470 490 510 530
Seat Tube Angle 75° 75° 74.5° 74.5° 74° 74°
Head Tube Length* 123 129 140 155 165 181

Handling & Chassis

Measurement XS
50cm		 S
52cm		 M
54cm		 M/L
56cm		 L
58cm		 XL
60cm
Head Tube Angle 71° 71° 71.5° 72° 72° 72°
Wheelbase 1004 1011 1014 1024 1037 1047
Chainstay Length 415 415 415 415 415 415
BB Drop 75 75 73 72 72 72
Fork Axle to Crown 395 395 395 395 395 395
Fork Offset 51 51 51 51 51 51

Trail Measurements

XS
50cm		 S
52cm		 M
54cm		 M/L
56cm		 L
58cm		 XL
60cm
Trail 68 68 64 60 60 60
Fork Offset 51 51 51 51 51 51
Stock Chainstay 415 415 415 415 415 415
Stock Fork A-C 395 395 395 395 395 395
Custom Geometry Available Available Available Available Available Available
All measurements are listed in millimeters unless otherwise noted. Effective top tube and head tube length are estimated from the provided stock geometry and should be confirmed during final design approval.
Technical Specifications

Built around your standards.

3 Notch can be configured around the standards, clearances, and build details that make the most sense for your riding goals.

Custom Build Options

Frame Material
Titanium 3AL-2.5V custom gravel frame platform
Geometry
Choose stock geometry or request a full custom fit and handling profile
Fork Setup
Stock geometry shown with 395mm axle-to-crown fork; custom fork standards available by request
Chainstay Length
Stock geometry shown with 415mm chainstays; custom lengths available depending on tire and drivetrain setup
Bottom Bracket
Available in modern threaded standards, including T47 depending on build requirements
Brake Mount
Flat mount disc brake configuration available
Axles
Modern thru-axle standards available, commonly 12x100 front and 12x142 rear
Tire Clearance
Configured around your intended wheel and tire size
Routing
External, internal, downtube internal, or headset-style routing options depending on build goals
Mounts
Bottle mounts, top tube mounts, rack mounts, fender mounts, fork mounts, and bikepacking options available
Drivetrain
Design around 1x, 2x, mechanical, electronic, wide-range, or adventure drivetrain setups
Finish
Raw titanium, brushed titanium, etched graphics, anodized details, or custom finish options available
Warranty
Backed by a 5-Year Limited Warranty

Build your 3 Notch.

Pick from one of our stock geometries or tweak the numbers for a full custom build. Contact Blackwater Bicycles to start designing your dream titanium gravel bike.

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