Enduro Mountain Bikes

Ibis's enduro bike, the HD6, is built for the most demanding tracks in the world. Its geometry is long, slack, and low, prioritizing stability at speed and control in steep terrain. Sizing is based on a modern reach-focused philosophy.

HD6 Size Chart

Trail Mountain Bikes

The heart of the Ibis lineup, these bikes are renowned for their incredible climbing efficiency and playful descending capabilities. The Ripmo is the long-travel 29er for all-mountain shredding, while the Ripley is the nimble, short-travel 29er for fast trail rides.

Ripmo & Ripmo AF Size Chart

Ripley & Ripley AF Size Chart

Gravel Bikes

The Hakka MX is Ibis's versatile gravel and cyclocross machine. Its geometry is designed for stability on loose surfaces and comfort over long distances, without sacrificing the snappy handling Ibis is known for.

Hakka MX Size Chart

E-Bikes

The Ibis Oso is a groundbreaking e-bike that combines long travel with the proven DW-link suspension platform. Its unique sizing is designed to provide a stable, confidence-inspiring ride that can tame any trail.

Oso E-Bike Size Chart

A Deep Dive into Ibis's Sizing Philosophy

Ibis has always been at the forefront of mountain bike geometry. To choose the right Ibis is to understand their philosophy: create bikes with exceptionally low standover, short seat tubes, and modern reach numbers. This approach empowers riders by giving them more room to move and more confidence on the trail. It's a sizing strategy based on handling and feel, not just fitting a rider's height.

The DW-Link Advantage: Sizing for Unrivaled Efficiency

At the heart of every Ibis full-suspension bike is the legendary **DW-link suspension platform**, designed by Dave Weagle. This isn't just a feature; it's the foundation upon which their geometry is built. The DW-link is renowned for its "anti-squat" characteristics, which means it resists compressing under pedaling forces. This provides two key benefits that directly impact sizing and fit:

• Incredible Climbing Traction: The bike remains active and tracks the ground, even while pedaling hard uphill.
• A Stable Pedaling Platform: The bike doesn't "bob" or waste energy. This allows Ibis to design their frames with steeper seat tube angles (around 76-77 degrees).

This steep seat tube angle is critical. It places the rider's weight more directly over the pedals, creating a powerful and comfortable climbing position. It also means that for a given "reach" number, the overall cockpit length (effective top tube) feels comfortable and not overly stretched out. This synergy between the suspension and geometry is what gives Ibis bikes their famous "do-it-all" character.

Reach-Based Sizing and Low Standover

Ibis was a pioneer of the "long and low" geometry that has now become the industry standard. Their sizing philosophy prioritizes two key numbers:

• Reach: As you can see in our charts, Ibis provides the reach measurement for all their mountain bikes. This is the primary indicator of how long the bike will feel when you're standing on the pedals and descending. A longer reach provides more stability at speed.
• Low Standover / Short Seat Tubes: Ibis designs its frames with the shortest possible seat tubes for each size. This provides maximum standover clearance and, crucially, allows for the use of longer-travel dropper posts. A 5'8" rider on a size Large Ripley can often run a 175mm or even 200mm dropper post, allowing them to get the saddle completely out of the way on descents for maximum maneuverability and safety.

This philosophy means that many riders can comfortably fit on two different sizes. The choice then becomes about handling preference: size down for a more playful, nimble bike, or size up for a more stable, planted feel at high speed.

Sizing FAQ & Advice

Why is a Professional Bike Fit Important for an Ibis?

A professional bike fit is a valuable investment for any high-performance bike, and Ibis is no exception. While the height charts provide an excellent starting point, a professional fitter can analyze your individual flexibility, proportions (torso vs. leg length), and riding style. They can help you make the crucial decision if you're between sizes and can fine-tune your cockpit setup (stem length, bar width, lever position) to perfectly match the bike's geometry to your body, ensuring you get the most out of the DW-link suspension and modern frame design.

I'm Between Two Sizes. Which Ibis Should I Choose?

This is a great position to be in, as Ibis's geometry is designed to accommodate this. The decision comes down to your priorities:

• Size Down (e.g., Medium instead of Large): Choose the smaller size if you prefer a more playful, agile, and "poppy" bike. It will be easier to flick through tight corners and get airborne. This is a great choice for riders in places with twisty trails, like many woodlands in the UK.
• Size Up (e.g., Large instead of Medium): Choose the larger size if your priority is stability at speed and confidence on steep, rough terrain. The longer wheelbase will make the bike feel more planted and calm during high-speed descents. This is often the choice for enduro racers or riders in big-mountain terrain.

Thanks to the short seat tubes, you can likely run a long dropper post on either size, so saddle height is rarely a limiting factor.

How do I choose between a Ripley and a Ripmo?

This is the classic Ibis dilemma. Both are incredibly capable 29er trail bikes, but they are tuned for different purposes. The **Ripley** is a short-travel (120mm rear / 130mm front) trail bike. It's incredibly efficient, lightweight, and agile—perfect for long days in the saddle, fast-flowing singletrack, and covering lots of ground. The **Ripmo** is its bigger sibling, a long-travel (147mm rear / 160mm front) all-mountain bike. It's built to handle bigger hits and steeper terrain with more confidence. If your rides involve big climbs and fast, flowy descents, choose the Ripley. If you prioritize descending capability and ride aggressive, technical trails, the Ripmo is the better tool.

What is "Traction Tune" and does it affect fit?

Ibis's "Traction Tune" is a suspension philosophy that utilizes lighter-than-average high-speed compression and rebound damping. This allows the wheels to react more quickly to the terrain, providing exceptional traction. It doesn't directly affect frame sizing, but it's part of the overall package that makes the bike so capable. A correctly sized frame allows you to properly weight the bike, which in turn lets you get the maximum benefit from the Traction Tune suspension.