The version 2.0 of the Riff offers practical updates in features and geometry without going all-in with progressive geometry that almost everyone in chasing. We wanted to keep this frame a hardtail that's great for bike packing and familiar-feeling on long days in the saddle on rolling terrain. There is a slightly steeper seat angle for more efficient climbing and shorter seat tubes to benefit dropper posts.
Tough Broski Sliding Dropouts allow you to run single-speed, geared or even hub gears. Rear hub spacing in updated to Boost 148 . A modified chainstay allows fitting even some double cranks with “plus size” 2.8″ wide.
Tange Prestige heat-treated butted CrMo steel; butted CrMo rear end
– Geometry is optimized for 120mm forks. Will work well with a 100mm fork, too.
– IRD Broski Sliding Dropouts allows geared and single-speed builds with easy wheel removal
– S-bend seatstays and chainstays
– Rear rack and fender eyelets
– Disc brakes only (ISO tabs)
– Dropper post cable routing runs on downtube and inside the seat tube
– Boost 148mm rear hub spacing
– 3 pack mount and water bottle mounts on down tube (LG size has a set of water bottle mounts on the seat tube as well. Seat tube bosses are left off the other sizes to better fit with dropper posts)
– ED coating inside frame and under the paint increase rust resistance
– CNC-machined 44mm headtube: Will fit 1-1/8″ steerers with a ZeroStack 44 headset or fit tapered steerers with a ZS44 upper assembly and external cup (EC44) lower assembly
– 31.6mm post size/34.9mm frt. der. size/34.9mm seat collar(not included), 400mm(or longer) post recommended.
– Recommended tire size: 27.5 x 1.95″ – 2.8”
– Color: Aqua Mint (also available in Pearl White)
– XS - Wt: 5.7 lbs.
– Sizes: XS(38cm), SM(41cm), MD(44cm), LG(47cm)

We recommend positioning the sliding insert in the middle or front half of the slot. Sliding it all way back puts extra stress on the frame.
When setting up make sure sliders are evenly aligned. Wheel will be crooked if dropouts are not aligned. Loose bolts here can be hazardous to riding.
Make sure the bolts holding the sliders are safely tightened at all times. Those bolts should be tightened to about 25nM.
Inspect inserts and wheel periodically for correct alignment. Try carbon paste on the slider contact areas, if you are experiencing slipping even though the bolts are adequately torqued.
Don't forget to tighten the nut against the dropout after setting the limit screw.
Yes, you can. The Juice has braze-ons on the dropout and seatstay to fit a rack. You may need a rack that is "disc-specific" so the left strut can clear the disc brake caliper and cables. Axiom, Topeak and others make racks to fit with disc brakes. Also make sure your rack is tall enough to clear 27.5" MTB tires before purchasing.
The 27.5" (aka 650b) is the most recently developed wheel size for mountain bike use. 26" became the primary size in the early days of mountain biking and 29" was developed around 2000. And the 27.5" option gained popularity 2013. The 26" tire size makes for a fast accelerating strong wheel for MTB. However its smaller size it is doesn't roll over rocks and through rough terrain as easily as a larger diameter wheel. It also doesn't maintain rolling momentum as long as a larger tire.
The 29" wheel especially with development of tires over 2.3" has changed the way people ride because of how it tackles technical descents and even rocky climbing more confidently than 26" wheels. Riders appreciate it how it rolls over rocks and depressions more easily. Deservedly most mountain bikes generally come with 29" wheel these days. The 27.5" was designed to be the "happy medium" between 26" and 29".
1) Those who feel 29ers were a little to unwieldy and slow to accelerate.
2) Those who liked the 29ers rolling advantage, but didn't want to give up the steering quickness of a 26" bike.
3) Those who want big wheel benefits, but find most 29er frames are a little too big for them.
4) Those who find 29er wheels a little heavy. 650b will be noticeably lighter.
5) With development of 27.5 x 2.6 and 2.8 (mid-fat tires) rolling advantage and traction rivals some 29" wheel options. However expect these mid-fat tire/wheel combinations to be heavier than 29" cross country MTB wheels.
Please review our updated shipping policy before ordering.