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Carbon 4.0 Mountain Bike Frame


Item # IBSB04J

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Item # IBSB04J

Ripley Carbon 4.0 Mountain Bike Frame

Back for a whole new flavor of all-mountain shredding, Ibis' Ripley Carbon 4.0 Mountain Bike Frame features oodles of new geometry that's hungry to challenge the sum of its numbers. Ibis satiates our appetite for a do-it-all 29er by taking the Ripleys racy cross-country roots, and offering the ever popular longer-slacker-steeper treatment that sends modern bikes into bigger terrain than ever before, but fortunately for you, the engineers used some restraint to keep the steed true to its snappy pedaling roots that still excel when its time to bust out some XC hot laps. After seeing a hoard of bikes stretched out to the max, we're happy to see that the head tube is only slackened a single degree, while the bulk of the changes took place in the rear end, with redesigned chassis that elevate the bike's playful characteristics, and keeps things rolling quickly.

The Ripley 4’s major update meant that Ibis’ engineers could start from the ground up, and they chose to start with the heart-and-center of the bike, updating the dual-eccentrics used in the past to a new design based on the Ripmo, which still holds DW-Link suspension tucked neatly in the front triangle, but without as much weight, and with a huge boost in stiffness. This change in the frame’s chassis allows massive weight savings of over a half-pound on the frame alone, giving your all-mountain machine a little more pep in its step when you’re pushing up grueling climbs, and a more nimble feel when you’re flicking it around tight switchbacks.

Weight savings aside, one of the biggest benefits we see with the drop of the double-eccentric design is extra room in the seat-tube, which enables taller riders to run dropper posts up to 185mm. This long-dropper length lets Ibis’ engineers carry forward with even more geometry tweaks, like an extra-low stand over height, so you can pick your frame based on reach, eliminating seat-tube size from your list of limiting factors on your new-bike hunt.

Changes didn’t stop with the eccentrics though, the Ripley has been tweaked all over, including a one-degree slacker head tube for a stretched wheelbase that adds a bit of confidence to the descents, and a three-degree steeper seat tube angle that keeps you in the center of your cockpit perched nicely for climbs. On the rear end of things, Ibis shortened the chainstays by a whopping 12-millimeters to boost stiffness, and make the suspension a bit more progressive, without letting go of the lively pedaling characteristics of the previous Ripley.

  • Tackle all-mountain lines with Ripley's playful short-travel 29er
  • Modern longer-slacker-steeper geometry increases capability
  • New chassis inspired by Ripmo shaves 1/2lb of weight
  • Keep pedaling snappy and responsive with DW-link suspension
  • Low standover height lets you base sizing on reach for better fit
  • Extra-long dropper post is enabled thanks to new chassis design
  • Stiff and light carbon fiber keeps things snappy and reliable

Tech Specs
Frame Materialcarbon fiber
Wheel Size29in
Rear ShockFox Float Factory DPS with EVOL
Rear Travel120mm
Forknot included
Head Tube DiameterZS44 upper / ZS56 lower
Bottom Bracket TypeEnglish threaded
Cable Routinginternal
Brake Typedisc
Seatpost Diameter31.6mm
Rear Axle12 x 148mm Boost
Manufacturer Warranty7 years

130mm Travel Fork

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Actual Weight


Claimed Weight

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[medium] 5lb 14.4oz

Actual weights are measured in-house by the Competitive Cyclist team.

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What do you think about this product?


>Rating: 5

Flicks and Pops

I've used it several times
True to size
Size Bought
5` 8"
160 lbs

I am 174cm (74kg) and I bought the M size frame. The bike fits me well, I went for a higher stem spacer (20mm) and even have a 30mm rise ONEUP handle bar on it. I am 48 and prefer to ride a little upright given the recurring sore back and shoulders. I had about 6-7 rides on it and it is just one of those bikes that make you wanna get out there and ride. The trails I ride have an abundance of lung bursting ups with short downhills that make you wonder if the climbs are worth it. I get the odd couple of 2 footer drops but generally not trails with endless descents. This bike suits this kind of terrain 100%. The emphasis on 'Trail' rather than 'XC' made me select this over the EPIC EVO as I wanted to mix it up with a little bit of naughty flicks and pops. The trails I ride are also quite tight, and the agility and sharp handling of this bike makes it easier on the twisty, windy single tracks. I paired this bike with a Pike instead of the Fox 34 just so I can get a stiffer feel up front and it seems to work. I would say that dialing in the suspension takes a bit of time. But I eventually went with a few PSI less from the recommended settings purely because the terrain I ride in which doesn't have that big of a deal jumps or drops. I would say I am about OK for fitness and this bike has helped me keep up with fitter riders a little longer than usual (I am still slower). I would wholeheartedly agree with the tons of online reviewers that this bike really eats up climbs. It goes over slow techy switchbacks climbs, does short bursts ones as well and your fitness will give up before you start blaming the bike. As for the descents, I would rate this bike almost as close to the Santa Cruz Tallboy. The Tallboy holds its ground better on rowdier rocks and tech descents unlike the Ripley that tends to wanna pop off everything instead. It is not a bad thing if you know where to lift off, but it may just be a smidge less predictable if you don't happen to line up the bike all that well. My bike weighed in at 12.3kgs with Dissector front and Rekon 2.4 rear, a 170mm dropper and full AXS. Online help has been extremely prompt and helpful from Ibis direct. You won't be disappointed with their level of service. Backcountry has also packed the frame well for delivery which deserves big kudos.

>Rating: 5

Everything about this bike is awesome!

I've used it once or twice and have initial impressions

What can you say about one of the best everyday just crushing it mountain bikes? I’ve ridden the Ripley LS, Ripmo, HD3, HD4 and the HD5 and I have to say this new Ripley is a beast stuffed into a small travel frame. The wife and I traveled down to one of my favorite winter riding spots in Hurricane, Utah for a little winter camping and riding. I also thought while i’m demoing this sweet ride I’d also toss on one of the new Cane Creek Helm demo forks (140mm 44offset) and give that a shot as well. It’s been a while since I’ve been out on a bike, I’m coming back from an injury so the first day back riding and nothing seems out of the ordinary the bike simply works. It did feel a tad light on the front end on the steeper climbs, but that is most likely due to the fact that I had a longer fork on it. It wasn’t till the second day when the wife and I switched bikes and that’s when I really noticed just how sharp the front end handling was on the Ripley. Her bike felt lazy and sluggish in the turns and it definitely did not feel as efficient on the climbs or just riding down the normal trail. To be fair her bike has a little more travel but it’s still a 29” current model bike that we bought in March of 2019 when it first came out. I came away from the weekend incredibly impressed with the new Ripley. Ibis simply nailed the geometry and stiffness of this bike and the entire time while I was riding it I really couldn’t think of anything I wanted to change. I was going to drop the Helm down to a 130 travel fork on Saturday night, however I forgot to bring along my small bike washing kit and I didn’t want to get any dirt in the forks. If you are reading this review it means you are looking for a new ride and quite frankly if this bike isn’t on your short list, you need to reevaluate your list it’s just that good! What’s that you say, you don’t want to take my word for it? Well then feel free to email me at and I’ll check the demo tour in your area and we’ll get you out on one. Pros: Super Sharp handling Efficient pedaling Fits a huge range of dropper lengths for everyone Cons: Internal channeled cable routing is not good for running moto style braking (front brake on right) Tight rotor clearance so Hope floating rotors will be a problem Did I mention the internal sleeving (yes the bike is that good) Rider Details: 5'9" 32" inseam / 180 lbs Sag: 30% rear (seated) 20% front (standing) Version Ridden: GX Eagle w/ Factory shock option size Medium Upgraded * Cane Creek Helm 140 (up from OEM 130) Fork Upgraded * Magura MT Trail SL Brakeset Upgraded * SDG Radar saddle Pedals: Deity TMAC


What's included with the Ripley frame (headset, rear axle, seat post clamp, derailleur hanger, etc)?

Shimano 148mm rear axle, rear derailleur hanger and seat post clam are included. Headset is not included.