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Praxis Launches 420g Carbon 'Lyft' Cranks for $420 - Eurobike 2023

Jun 26, 2023
by Ed Spratt  
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Praxis had a few new products on show at this year's Eurobike, but the biggest news was the launch of its second-generation carbon Lyft crank.

It can sometimes be tough to remember all the essential details at a show like Eurobike. Still, handily Praxis has created its updated Lyft to weigh 420 grams for its 175mm option with a cost of $420 dollars giving us one less number to remember. The claimed weight remains the same for the 170mm option with a 165mm crank having a weight of 412 grams. The new cranks can be used with BSA / BB90-92 / T47 EB / BB30 / PF30 with chainline options of 55, 52 and 49mm.

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Alongside the new Lyft crank, Praxis was also showing off its alloy Zane kids crank which is available in lengths from 120mm up to 150mm. While Praxis says this is very much intended to be used as a kids crankset there is no set weight limit imposed. Maybe the next Grim Donut should take short cranks to its logical conclusion and feature 120mm cranks for Cathro-sized humans.

Praxis also told us that they've now licensed narrow-wide technology for all its chainrings, so they should play nice with all 11 and 12-speed chains.

Author Info:
edspratt avatar

Member since Mar 16, 2017
3,233 articles

104 Comments
  • 77 1
 I was talking to a roadie mate the other day who'd recently had a bike fit. He was saying what a difference the bike fit had made, especially the 5cm change in crank length from 175mm to 170mm. His other half and I looked at each other and both said "you mean 5mm", to which he replied, "no 5cm, no way I'd do something as stupid as pay £150 to change my cranks by 5mm". He was not happy when the penny dropped!
  • 7 10
 I recently switched down from 172.5 to 170 on a road bike and I can immediately tell the difference in torque when climbing
  • 17 1
 Well, you can happily inform him that it is a full cm (or 10mm) as the 5mm on each side adds up to 10mm Big Grin
  • 4 1
 @mrkkbb: do you feel it to be less?
  • 4 4
 @GoldenPromise: yes, steep long hills feel like more effort. I’m planning to move to 175. On the road I can tell. My point is mm do matter if you worry about pedaling efficiency, ie XCO and XCM
  • 2 1
 What are you trying to say though? 5mm is a huge number esp in regards to crank length. I normally run 172.5 and 175 is noticeable too long for me.
  • 9 0
 @mrkkbb: You might want to check out some of the many articles/videos etc. that consistently debunk this idea. It's a geared system, it just changes your ratios, which can be adjusted back via the chainwheel or cassette. The advantages of shorter cranks include less pedal strikes and better peddling ergonomics for your legs. I went 165mm and it's fantastic, just takes a couple rides to get used to
  • 1 0
 @GoldenPromise: Do some research on this and don't buy into the myth regarding crank length, it's a geared system. With a shorter crank (165/170) if you just go down a couple teeth on the chainring (or up on the cassette) all will be back to normal. There is extensive research and science online that backs this up
  • 2 0
 @mrkkbb: that’s what gears are for. On an MTZb I’ll take improved clearance and drop down a gear. No idea what length cranks my old road bike has.
  • 6 0
 He did change his crank circumference by 3.1416 cm per rotation. That might cheer him up.
  • 3 0
 @iamamodel: Hahaha I'm definitely gonna have to work "crank circumference" into a conversation now.
  • 1 0
 @Moonie2123: What is your height? I am 5'6" and riding 175mm because its what was available when I built my XC bike.
  • 3 1
 @Moonie2123: Yeah, I think those studies are a bit flawed. I mean, on a level road without any obstacles that cause the torque required to turn over the pedals to vary within the same pedal stroke they are correct to a certain extent. However, human beings are a weird power source. Our ability to push with force varies a ton over the range of a pedaling motion. Anybody who has ever lifted weights or played an actual sport knows that, yo. In other words, for roadies and the like, crank length is likely more about personal preference and gear choice. With technical climbing and bursts of needing maximum torque, within a certain range of motion, you are better off with fewer, deeper knee bends than more and shallower pushes.
  • 1 0
 @Moonie2123: Now nobody read my other post too carefully lest you notice I made that shit up and have no idea what I'm talking about. I'm guessing I tricked at least a couple people into thinking I'm not an idiot. hehehehe
  • 1 0
 @Parker9146: I'm 5'10" running 165s, from stock 172.5s. After the first two rides, you really don't notice a difference. Just need to gear up/down a tooth or two, all good.
  • 1 0
 N=1

My trail bike came with 165's. After destroying them my LBS accidentally ordered me 175mm replacement. I didn't know it either. I rode the bike for a few rides noticing how something was off, but assuming it was me. But what I did notice was how much better the bike felt.

My LBS offered to correct the mistake, but I said hell no. I also took the opportunity to gear taller for a higher top speed.

Not everyone agrees with shorter cranks, there are always outliers.
  • 68 0
 But will they survive a slow-mo huck to flat?
  • 94 0
 I'm going to ask Jason to come back for this one.
  • 15 0
 @brianpark: swapped my Kenevo SL cranks for Praxis alum version after seeing Jason’s ankle rolling, then proceeded to go through no less than 4 sets of their alum crank arms which all bent landing normal sized drops/jumps.
  • 14 1
 420 break it
  • 4 0
 @panthermodern: You’d like the original 420 break crank from the legendary dirt jumps here in Seattle circa 1997...it was a slightly-bent steel Profile drive-side crank arm with a custom bowl in the chainring-mount bolt hole, a custom mouthpiece at the pedal threads (there’s a well-placed 3/16” welding expansion hole there), and the welding expansion hole at the spindle functioned as the carb. 40 ounces to freedom made it hard to ride...so it was 175mm to freedom =P
  • 3 0
 @WRCDH: A bent Profile crank arm? Must've been a hell of a crash or case to do that; I've heard those are virtually bombproof.
  • 43 0
 They should make it even lighter so that it can be cheaper.
  • 29 2
 Awaits the stoner comments.
  • 28 0
 I'm just hoping it has a 69mm spindle
  • 8 3
 @lowkeyokeydokey: Pretty disappointed it doesn't come with 420mm crankarms.
  • 47 0
 They are typing them very, very slowly as we speak
  • 13 0
 165mm at 412 grams they need a built in stash box for my 8 gram doobbie.
  • 5 0
 @csvetich: The perfect use for the void in Hollowtech cranks
  • 6 0
 @csvetich: and if an 8g doobie won't get ya there nothing will.
  • 8 0
 @gonebikin143: Eight grams is beyond "doobie"; that would make a very large blunt.
  • 3 0
 Funny numbers rock!
  • 5 0
 @headshot: the funny thing is the cost of weed is so low these days, i'm saving enough on every blunt to go buy myself some eeWings!!!
  • 24 0
 Weed is legal and everyone's on 160 or 165mm cranks now.
  • 2 2
 It's kind of disturbing to us old farts ...
  • 4 54
flag wburnes FL (Jun 26, 2023 at 15:09) (Below Threshold)
 Weed is still federally illegal in the US thankfully
  • 18 1
 @wburnes: what's going on, dude? We're concerned.
  • 1 17
flag wburnes FL (Jun 26, 2023 at 15:12) (Below Threshold)
 @owl-X: about what?
  • 27 3
 @wburnes: about you. And...okay, I'll bite: please tell us why federal cannabis prohibition is something to be thankful for...

oof
  • 4 4
 @owl-X: Yes, prohibition sucks. But so does a flooded legal market with massively increased costs. Small cannabis farmers should be able to make a buck, imo.
  • 8 54
flag wburnes FL (Jun 26, 2023 at 18:17) (Below Threshold)
 @owl-X: Prohibition is good. If you think powerful psychoactive drugs that are very addictive and f*ck up your brain shouldn't be prohibited, there's really nothing for anyone to gain in speaking to you.

You should be much more concerned about what effects very high potency marijuana has on your brain than you are about me.

The other great thing is that it increases the amount of time violent criminals spend in jail.
  • 19 1
 @wburnes: I hope you don't drink alcohol, because otherwise I've got some real bad news for you Smile
  • 10 1
 @vp27: to be fair, alcohol should definitely be illegal! lol
  • 12 2
 @wburnes: Reefer madness called. They want their ideology back.
  • 1 0
 Agree with marijuana sentiment, but traded my 165s and went back to 170s off road and 175s for road. Even after knee surgery. 165s seemed ineffectual.
  • 5 0
 @Chondog94: weed has pretty much been the same price for my 30 years of adult life. And you can grow it yourself for almost free.
  • 1 7
flag wburnes FL (Jun 27, 2023 at 9:45) (Below Threshold)
 @vp27: what's the bad news?
  • 3 2
 @woofer2609: As a consumer, it would be a negligible difference in cost. As a producer, it couldn't be more the opposite. Regulation has led to extremely thin profit margins which has led to small farmers no longer being able to stay competitive.

You can certainly grow mediocre weed yourself for nearly free. Good genetics and quality nutrients aren't cheap. Neither is land, compliance, or labor.
  • 8 2
 @wburnes: If you've read the studies it indicates that irresponsible use of high potency cannabis leads to increased risk for individuals predisposed to psychotic issues. The likelihood of it happening to responsible users is very low. All drugs will have consequences (most of them negative) which is why I do not partake in any drug use outside of my cup of coffee but this study has been blown up by click bait journalism and anti-cannabis paranoia.

Everything in moderation. Especially BS media.
  • 3 11
flag wburnes FL (Jun 27, 2023 at 10:16) (Below Threshold)
 @Chondog94: "spend money wasting time on drugs that will give you psychosis in moderation" great advice!
  • 5 2
 @wburnes: Only you can define what is a waste for yourself. We all take different paths in this life, best of luck to you on yours.
  • 5 2
 @wburnes: The only psychosis I see in this comment section, which contains lots of potheads, is yours.
  • 5 7
 @Chondog94: reality is not subjective. Getting high is a waste of a life
  • 6 2
 I'm impressed to see wburnes out here trying to get every comment "Below Threshold". 5 out of 7 and counting.
  • 5 6
 @nickfranko: Who cares? I'm being down voted by drug addicts, and people who deny reality because it conflicts with liberalized drug policy ideals, which hurt everyone in society
  • 3 2
 @wburnes: Can I be so out of touch? No, it's the children who are wrong.
  • 3 1
 @barp: I am the children
  • 2 1
 @wburnes: I am the eggman, they are the eggmen
  • 16 2
 More like Cracksis
  • 18 0
 "Craxis launches 420g carbon 'Splyft' cranks"
  • 4 3
 did i missed something? they didnt help design a certain sub by chance?
  • 1 0
 @vemegen: nope, no imploding cranks here...yet.
  • 2 0
 @vemegen: you missed 420 things
  • 14 2
 All right everyone…why don’t we like this product?
  • 15 2
 For making the range 165-175 when it should be 160-170
  • 1 0
 @twebeast: Give me the 120mm cranks in carbon
  • 4 0
 @twebeast: 160-170? Those are all gross obselete garbage cranks. 130-155mm is ideal
  • 3 2
 @Leven: Carbon? Roadie pleb shit. 3D printed titanium please
  • 2 0
 @wburnes: polished brass is where its at
  • 2 1
 @hamncheez: to be fair, guys from local distribution warranted these for me within few days, I had no receipt -seconhand bike. Thats fair enough I'd say
  • 7 0
 @bok-CZ: Do they cover your medical expenses, too? Because I don't give a damn about cranks at that point, breakage like that can destroy your ankle and leave you in a cast and crutches for an extended period. Jason was very lucky he didn't end up in the hospital.
  • 2 0
 @nickfranko: this is no joke, I'm going through a grade 3 sprain right now. i didnt realize how brutal it is, never done that in 26 years. now i have a different perspective of what a "sprained ankle" is.. lol, 3 hospital visits, dozens of x rays, orthopedic specialists. just started walking after 16 days and probable another month before i can ride lightly.
also, my ee-wings are now +4 years old woohoo
  • 1 0
 @nickfranko: I am sure mine took few serious strikes before failure, however luckily I've been only bunny hopping onto sidewalk in front of a bar, no speed, no injury, just a reason for few drinks.
But yeah got your point and staying away from carbon cranks
  • 7 0
 Great price to weight ratio! I'm sure there are 0 compromises to get there!
  • 3 0
 Praxis LYFT and XX1 user here. If you buy the Praxis bb don't forget the proprietary Praxis bb/torque tool. But....the Praxis crank comes with a metal bearing preload adjuster whereas SRAM's cheap adjuster pretty much needs a $36 Cane Creek preloader for if/when the oem item cracks.
  • 4 0
 I won’t be buying this purely because it needs a proprietary tool. But thanks for the heads up.
  • 4 0
 I will stay FAR away from these for sure. My ride buddy snapped THREE crank arms on his Kenevo SL and i broke one my self. Not worth the risk. I can't understand why Specialized didn't recall these, too dangerous.
  • 6 1
 Uber-weird naming for a Santa Cruz company.
  • 5 1
 And why'd they name it after the exams for teaching licensure?
  • 4 1
 Why do people still make carbon cranks? Is it cheaper to manufacture them? Are the materials easier to get? Is there a real positive reason to use them?
  • 3 0
 Because certain types of people keep buying them, I suppose
  • 2 0
 Well they are lighter….
  • 4 0
 Praxis is Buckethead, Bill Laswell and Brain. Amazing band.
  • 2 0
 It's a hardware store in the Netherlands. Not that amazing though.
  • 2 0
 Well shit, I love Buckethead and didn’t know about Praxis. Thanks for that, good stuff.
  • 2 0
 @nastynate711:

They have several great albums. Most live and unrehearsed mostly I believe.

Don’t miss out on the 2004 Tennessee album

youtu.be/TQlVaPpny5w
  • 1 0
 @Tigergoosebumps: Will do! It’s been in the rotation all week, loving it.
  • 1 0
 Im 6’2” and my element came with a 170mm crank. I haven't noticed at all. I do pedal strike far more than my top fuel did in pos 1-3 so im thinking if this cheap RF affect crank goes like my last one ill get a 165mm
  • 4 1
 Nice
  • 2 0
 A dollar a gram, is that the going rate for 420 in the US?
  • 1 0
 That would be nice, still paying around $3/gram in Colorado
  • 4 1
 420 Nice
  • 2 0
 Are these going to suck like just about everything else praxis makes???
  • 1 0
 Soo, what is the spindle diameter???
  • 1 0
 30mm
  • 2 1
 Anyone else having issues w the buy sell and searching on here ??
  • 2 0
 What's the warranty?
  • 1 1
 Oh look, new kids cranks in 150mm for all the "but muh short cranks" crowd.
  • 2 0
 JAHHHH BLESSS!!
  • 2 3
 What ever.....I cant buy M30 165mm for my kenevo SL on Europe...so....







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