Smoothie HP (Endurance Road Disc)

The Smoothie HP is the “high protein” version of our Smoothie road frame that was part of our line for almost 20 years. Extra large diameter, thin-wall Tange Prestige chromoly coupled with modern touches like thru-axles and compact geometry give this frame increased power transfer and road feel while still delivering a composed and plush ride at all speeds. The re-designed geometry combines a comfortable higher stack with a shorter wheelbase that rewards skillful riders.

Frame Features:

- Tange Prestige heat-treated double butted CrMo steel

- Extra oversized down tube and chainstays for greater pedaling stiffness

- Ovalized top tube for increased lateral stiffness and vertical compliance

- Size specific tubing, larger downtubes on larger sized frames

- Comfortable high stack matched with a tighter wheelbase than the typical big brand endurance road frame

- Replaceable modular dropouts (12 x 142mm bolt-on thru-axle, fits flat mount disc brake)

- BSA Threaded bottom bracket shell

- Rear rack/fender mounts

- Max tire size: 700x32c with fenders

- Two water bottle boss sets

- 6 sizes: 48, 52, 54, 56, 58, 60 (For 2024 Matte Black is only available in 52, 54, 56cm)

- In Candy Apple Red and Matte Black


Fork Features:

- Carbon Fiber

- 43mm rake (48mm on size 48 and 52cm)

- Fits 700x32 tires with fenders

- 12 x 100mm QR thru-axle, flat mount brake compatible

- Tapered alloy steerer

- Internal cable routing

purchase!

Smoothie HP (Endurance Road Disc)

  • Specifications and Recommendations:

    Frame:
    - Seatpost: 27.2mm, Seat collar: 29.8 or 30.0mm
    - Front derailleur: 28.6mm, bottom pull
    - Rear hub thru-axle: 142mm x 12mm
    - Headset SHIS: ZS44/28.6 | EC44/40)
    - Max.Tire Fit: 700c x 35mm (certain front derailleurs may reduce tire clearance)
    - Min. Tire Recommendation: 700c x 23mm - Max chainring fit: 52-39-30t, 53-39t,
    - Bottom bracket shell: 68mm wide, English threads
    - Compatible with downtube shifters
    - Rear disc brakes: 140mm rotors (160mm w/adapter), Flat mount, use fixing bolt length that fit "10mm chainstays" (could be 23mm or 17mm depending on your brake)
    - Also compatible with 57mm reach road rim brake
    - Rear rack fitting: We recommend a rear rack designed for short chainstay bikes like our Rakku to reduce heel strike with large bags.
    - Recommended fender fit: 37-45mm wide; ideally 10mm wider than tire width
    - Maximum weight with rider and cargo: 270 lbs

    Fork:
    - Rake: 43mm (48mm for size 48cm and 52cm)
    - Axle to crown: 380mm
    - Disc brake mount type: Flat mount, 160mm max rotors
    - Also compatible with 57mm reach road rim brake
    - Hub thru-axle: 100 x 12
    - Fender mounts on inside of legs
    - Max.Tire Fit: 700c x 35mm
    - Steerer: Aluminum, so you can use either star washers or a compression (expansion) plug with your headset. 350mm long

  • What is the cable routing like on the Smoothie HP?

    The Smoothie HP runs shifter cables and the rear brake externally along the downtube. We believe that bicycles with with internally routed create maintenance headaches that outweigh their benefits for this type of bike. The frame is compatible with old school downtube friction shifters. A nylon plastic cable guide is screwed into the bottom bracket shell. The matching carbon fork has internal routing. Cable guide braze-ons need C-clips(included) or zip-ties to hold the cable housing to the frame.

    1) If you are not using downtube friction shifters, you need to purchase downtube cable stops to cover the bosses and to create an guide point for running cables.

    2) We recommend sheathing exposed shifter cables on the downtube and bottom bracket with Teflon cable liner. These are inexpensive and helps keep the cables from a build up of dirt and grease on the plastic cable guide. Also reduces corrosion if you are not using stainless steel cables.

    3) It is common on bikes that cable housing can rub on the paint of the bikes when you turn the bars. We recommend getting stickers (cable dots, frame protection tape) applied in areas you see rub.

  • Do you have build recommendations for the Smoothie HP?

    For most of our frames we usually don't recommend much beyond stay practical and reliable. For the Smoothie HP since it is a little more purpose-built for a certain type of performance, we would recommend faster, lighter wheels and tires with fast rolling casings. They will help you spin up to speed faster and the frame will help you maintain momentum. Not wiggly light wheels; you do want some stiffness for cornering. We think this is more important than deep aero wheels, but build it however you want.

Smoothie HP (Endurance Road Disc)

  • Favorite drop bar bike I've owned

    “Rides like a dream, eats up most of the vibration from just about any terrain that the measured 33mm tires can handle, which has so far included some sections of pretty loose gravel over hardpack. Also turns on a dime! Instantly my favorite drop bar bike I've owned. This is my first Soma but I'm sold, it'll be an easy choice whenever I'm looking to build something up in a segment they offer. I've ridden Litespeed, Cervelo, and Otso mostly and nothing has ever balanced stiffness with comfort like this does.”

    ArcherCat2000, Reddit City, Interwebs

  • Built with parts sourced all over eBay

    “Still getting to know the bike. It somehow reminded me of a Cannondale Synapse I rode some years ago. Feels completely relaxed and it also lets you sprint, without the frame flexing in a weird way. Lowered the handlebars significantly and that really helps the cornering. For me it works to almost slam the stem. I wouldn't like riding it sitting up right. With the higher bar position, cornering felt a bit vague, almost detached. So that's all geometry. Back to ride quality.. what do you file under ride quality? I think the tires and wheels take most of the road buzz. The frame feels very light and nimble. I added up all the parts and the build comes to 8.325 kg. Somehow I was worried that the fork wasn't full carbon (has an alu steerer). But in practice, that didn''t bother me at all. It gives the bike a nice front/rear balance.”

    Danishun - Reddit, City, State

  • Love my Soma Smoothie HP

    “The ride and handling is exceptional. I was actually quite surprised at how responsive it felt when sprinting. The oversized and oval tubes add a lot of lateral stiffness I've not gotten from other steel frames. It's light and soaks up the bumps on the road. Everyone has their preference but I don't want to ride any of my other bikes now....

    The ride quality is smooth living up to its name, but was I quite surprised at the responsiveness while sprinting...It's pretty zippy even with my heavy wheels and tire setup!

    The fork wouldn't have been my first choice given the alu steerer. It does the job though.

    Others have cited issues with cable routing being odd. The front mech cable rubs against the rear brake housing. I see where they're coming from but this has never been an issue to me nor is there a work around logistically. I put some frame protection on that area and it's friction and damage free. Worth the quirk for external disc brake routing to me.

    The paint... oh my. It's even better in person. The extra cost for the red over the black was worth it to me.

    Overall I absolutely love the bike and have been choosing to ride it over my aluminum and other steel bikes. I'd buy and build it again in an instant.”

    Reddit user 10494727204, City, State

  • First dedicated road bike

    “This is my 3rd bike and i really wanted a comfortable, dedicated road bike after 5 years of swapping between two wheelsets on my Gravel bike. It's comfortable like a cruiser, but handles like a sports car.”

    Robert R., Walnut Creek, CA

  • I just want to say how much I love this bike

    “The bike is composed, comfortable, and fast. I've got a few centuries under my belt on that thing and it has been awesome. I'm talking about spirited group rides with my friends on full carbon rigs. I also spent a good amount of time on that bike with 35mm slicks riding gravel in the headlands, and again, it is awesome. The higher stack really lends itself well to gravel riding. Often, all-road bikes are too low to get comfortable on chunky gravel. If you are too low on the front end of the bike over rough terrain, you'll end up hurting your back and shoulders. With the Smoothie, the higher stack allows you to get further to the back on the bike and unload your hands, which makes chunky gravel, even single track, very manageable on 35mm tires. One thing I've thought is great about the Smoothie is that it has maintained good handling characteristics through a wide range of road tires. Going between the 28s and the 35s didn't really change the handling that much. The trail number at 28mm is 58.7, while at 35 its 60.8. I have not felt this change. The bike handles great with both tire sizes. On my Enve Melee, going up to a 35mm makes the front end feel weird, also, toe overlap. No overlap on the Smoothie with 35s.”

    Mike L., San Francisco, CA

  • OMG I f---ing love it.

    “ Built it up with Sram Force Wide, so 43/30 x 10-36. I'm in the bay area so the gearing is so good for out here. I'm running 35mm wide Rene Herse Extra light tires. It rides so nice. I have a Ritchey Road Logic Disc too that is really racey, so I built this up as my endurance, more comfortable road bike, and comfortable it is. Its still got short chain stays, so its nice and snappy, but the bigger tires and the higher stack height make is so comfortable and confident. I have been blowing away PRs on descents. That is where the handling of the bike really shines. Having those big soft tires and the racey geo make it so fast going down. You can just slam that thing into the corners. I hit 47 mph in a descent yesterday. The higher stack is just such a bonus. I was searching for an endurance bike for so long, but all of them had low bottom brackets, slacked out head tubes, and long stays. The Smoothie HP has that nice tight race geo, quick handling, but you get the stack height of an endurance bike.”

    Mariachi Archer, SF Bay Area, CA