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Race Face Diabolus

MSRP $ 80.00
Weight 250 grams (50mm)
# of Reviews 33
Average Rating 4.91/5
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Description:From steep descents to high impact drops, the Race Face Diabolus, as the name suggests, was built for one thing – going fast as Hell.

Machined from 6061-T6 aluminum, the Diabolus is the stiffest, strongest stem available today, making it the ideal choice for DH racers and hardcore Freeriders.

Features:
  • Designed strictly for DH/Freeride Use
  • Interlocking U-shaped handlebar
  • Opposing bolts on steer tube clamp

    Size: 50mm & 70mm
    Rise: 10 degrees
    Colours: Black and Silver


  • Where To Buy

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    Submitted by Hangtime a Weekend Warrior from Portland, OR
    Date Reviewed: October 6, 2008
    Favorite Trail:Crank it Up
    Duration Product Used:2 Years
    Price Paid: $50.00
    Purchased At:Price Point
    Strengths:stiff and srtong
    Weaknesses:none
    Similar Products Used:Truvativ Hussefelt
    Bottom Line:Great stem, 50mm reach is perfect for me. Very strong and reasonable weight. very strong bar clamp. I never have to worry about it, thats what makes it great.
    Value Rating:5Overall Rating:5

    Submitted by Erik a Cross Country Rider from Powell, TN, USA
    Date Reviewed: February 2, 2008
    Favorite Trail:Haw Ridge, Tsali, all singletrack
    Duration Product Used:1 Year
    Price Paid: $80.00
    Purchased At:ebay
    Strengths:Cool looking, strong as all
    Weaknesses:yeah right
    Similar Products Used:bontrager, thompson
    Bike Setup:29er X-cal, easton carbon bars, XT crank, time atac, x-9, michelin tires
    Bottom Line:This thing reminds me of my BMX days, cool looking and strong. These 29ers have some flex in the front end, this thing doesnt move. I'm ride hard and rugged...this stem was made for me....
    Value Rating:5Overall Rating:5

    Submitted by Chris a Weekend Warrior from Middleboro, MA
    Date Reviewed: December 28, 2007
    Favorite Trail:Vietnam, Borderland
    Duration Product Used:6 months
    Price Paid: $50.00
    Purchased At:Ebay
    Strengths:Super strong, light, coool looking
    Weaknesses:None
    Bike Setup:Yeti 575
    Bottom Line:Believe the hype. Huge cool factor with strength factor. Go a little short with the stem and go long with the air. Able to manipulate the bike much better in the air. Don't get anything else.
    Value Rating:5Overall Rating:5

    Submitted by jay reid a Downhiller from halifax
    Date Reviewed: March 26, 2007
    Favorite Trail:Mine
    Duration Product Used:3 months
    Price Paid: $150.00
    Purchased At:cyclesmith
    Strengths:It is the best stem i have ever had looks sweet and solid
    as a rock
    Weaknesses:r u kiddin there aint no weaknees with this stem
    Similar Products Used:tru vativ
    Bike Setup:05 p.2 7"Jr.T,double track rims raceface diablous stem and handlebar,tru-vativ husselfelt cranks,single speed
    Bottom Line:well the bottom line is this stem with the handle bar is all u need
    Value Rating:5Overall Rating:5

    Submitted by a cas a Weekend Warrior from thunder bay on
    Date Reviewed: February 22, 2007
    Favorite Trail:mine
    Duration Product Used:1 Year
    Price Paid: $15.00
    Purchased At:ebay.ca
    Strengths:strong, good bolt pattern
    Weaknesses:nothing
    Similar Products Used:stock stems
    Bike Setup:rocky flow
    Bottom Line:Good product, a bit expensive if you buy it new.
    Value Rating:5Overall Rating:5

    Submitted by Ion a Weekend Warrior from Indonesia
    Date Reviewed: November 13, 2006
    Duration Product Used:3 months
    Price Paid: $60.00
    Strengths:Top CNCed build and finished. Very strong build and design wise. Basically "install and forget" parts that you do not need to worry.
    Weaknesses:Nothing so far.
    Similar Products Used:Giant OEM stem
    Bike Setup:Giant Faith
    Bottom Line:A very strong and stiff stem not only material wise but also design wise. The handle bar is fitted into the main body of the stem, and the cap of the stem has a tounge that interlock with the main body. This design will distribute the force not just to the bolts but also to the main body of the stem. I have not seen other stem with this design and I am sure this is why the diabolous stem has such a strong reputation.
    Value Rating:5Overall Rating:5

    Submitted by alex a Downhiller from trinity california
    Date Reviewed: August 5, 2006
    Favorite Trail:own
    Duration Product Used:3 months
    Price Paid: $60.00
    Purchased At:beyond bikes
    Strengths:every thing about it.
    Weaknesses:none
    Bike Setup:heckler freeride set up
    Bottom Line:why haven't you ordered one yet?
    Value Rating:5Overall Rating:5

    Submitted by Lou Gout a Racer from London
    Date Reviewed: April 30, 2006
    Duration Product Used:6 months
    Price Paid: $50.00
    Strengths:Will never break. There is no cooler looking stem. May not be for all but taste is something that cannot be argued about. Most will agree this stem is worth every penny based on looks alone
    Weaknesses:None, its heavier because its stronger - Bottom line.
    Made in canada, home of the most insane riders in the world. If it's good enough to last in British columbia. . . enough said
    Similar Products Used:azonic, kore, many others
    Bike Setup:bloody bullet-proof
    Bottom Line:Yeah, this stem is the dog's bollocks. Its sick looking, very strong, will hold the bar securely (forever). Anything going wrong with this stem seems very unlikely.
    Serious xc racers obviously will look elsewhere but those of us who appreciate rigidity, flash and something that will last for life should buy this stem Can attract a lot of attention as it adds much to your bikes appearance, so watch our for the dodgy folk who 'just wanna take your bike for a spin'. Londoner's - buy a cannister of mace to go along with it.
    5 flaming ringpieces for this one
    Value Rating:5Overall Rating:5

    Submitted by Dan a Weekend Warrior from Waterloo, Ontario
    Date Reviewed: November 14, 2005
    Duration Product Used:3 months
    Price Paid: $60.00
    Purchased At:PricePoint.com
    Strengths:Sexy, strong
    Weaknesses:none
    Bike Setup:Rocky Mountain Switch
    Bottom Line:Pretty basic review...this stem is super tough and it looks great. If you get the 70mm length it looks kinda odd but the 30mm and 50mm stems are pure sex. This stems seems strong enough to handle anything but a lot of stems are these days so what sets this one apart is the style. There are lighter stems but not ones that are stronger...it has a good strength to weight ratio.

    5 flames chilli's for a product that works flawlessly and looks good doing it.
    Value Rating:4Overall Rating:5

    Submitted by calen a Weekend Warrior from sf bay area
    Date Reviewed: May 24, 2005
    Favorite Trail:güch smoke
    Duration Product Used:3 months
    Price Paid: $20.00
    Purchased At:friend
    Strengths:unbreakable
    sexy sex
    Weaknesses:chrome bolts rust and mar an otherwise stealth stem
    Similar Products Used:hussefelt 40mm
    Bike Setup:Transition Dirtbag, burled
    Bottom Line:No other stem out there matches killer stiffness and strength with such hot CNC machining - no self-respecting freerider/DHer shouldn't run this stem
    75 bucks is a bit of dough for a stem but:
    A) it's nothing compared to a solid gold stem
    B) it's the last stem you will ever have to buy
    Value Rating:5Overall Rating:5

    Submitted by Terry a Weekend Warrior from Montreal, QC, Canada
    Date Reviewed: May 17, 2005
    Duration Product Used:Less than 1 month
    Price Paid: $114.00
    Purchased At:Le Yeti
    Strengths:Awesome looking, seems unbreakable, ease of installation
    Weaknesses:None so far
    Similar Products Used:Titec & Norco oem stem
    Bike Setup:'05 Norco Bigfoot, Hayes HFX-9 HD, Truvativ crank, Raceface Diabolous stem and handlebars
    Bottom Line:Raceface may cost a little more....but once you own one you will notv feel you paid too much....i will never change them again...GOOD JOB RACEFACE !!!
    Value Rating:5Overall Rating:5

    Submitted by duane a Cross Country Rider from aurora, colorado
    Date Reviewed: March 19, 2005
    Favorite Trail:roxborough/ i.c. loop
    Duration Product Used:More than 3 years
    Price Paid: $80.00
    Purchased At:lbs
    Strengths:warranty,killer looks,pretty tough.
    Weaknesses:mine cracked after two years .
    Similar Products Used:dangerboy tank,deus xc, ton of oem's.
    Bike Setup:kona coiler, xt , race face , dangerboy , best of the best of the blah blah blah,bling blang shizang!
    Bottom Line:after two years on my rockhopper and one year on my kona this stem's faceplate was discolored and faded looking,not the stem,just faceplate which seems to be made from a lower grade aluminum. after three years the metal on the sides of the faceplate had cracked on all four sides. this may have been caused by overtightening, but when you look at the thickness of the aluminum around the bolts that hold the faceplate on you can see there is almost NO METAL on the sides of the bolt heads. anyway, raceface replaced without even wanting the old one.way to go,raceface! i have since switched to a dangerboy tank which has MORE METAL around the bolts,but i got top dallar resale for the diabolous with the replacement faceplate, and true service from raceface, so five flaming stinkbombs overall.
    Value Rating:5Overall Rating:5

    Submitted by Mitch T a Downhiller from Cowgary
    Date Reviewed: January 25, 2005
    Favorite Trail:Gaps
    Duration Product Used:2 Years
    Price Paid: $100.00
    Purchased At:Bow
    Strengths:Looks,Strenth,Durrability, rideability.
    Really STRONG
    Weaknesses:Abit pricey, but not overly. Weight
    Similar Products Used:Specialized stem, etc
    Bike Setup:Demo 9, 05 888RC, king, etc
    Bottom Line:Wicked stem, definetly worth the price.
    For a FR stem this thing rocks, if your a DH racer looking for a light strong stem this isnt for you (Go thompson).
    This is another example of a raceface part you can throw on your bike, and not have to worry about if its going to hold up on a drop/gap. Lets you focus on doing the stunt, which is what its all about. Go for it
    Value Rating:4Overall Rating:5

    Submitted by Max L a Downhiller from Burlington Ontario Canada
    Date Reviewed: October 22, 2004
    Favorite Trail:Highway
    Duration Product Used:3 months
    Purchased At:B-Cycle
    Strengths:Stiff

    Design

    Looks

    Stiff

    Stiff?

    Weaknesses:Absolutely nothing...Great design..This is a must, save up and buy this!
    Similar Products Used:Axiom something something
    Bike Setup:2004 Norco Aline..888rt...Diabolus stem...
    Bottom Line:Wow, buy this stem its amazing. Super stiff, great for descents. :- )
    Value Rating:4Overall Rating:5

    Submitted by Ryan R. a from Long Island N.Y.
    Date Reviewed: September 2, 2004
    Favorite Trail:Ones with dirt, rocks, and an occsional tree
    Duration Product Used:3 months
    Price Paid: $65.00
    Purchased At:Jenson.com
    Strengths:No this is a S-T-R-O-N-G A$$ Stem! No slipping, no bending, no cracking or creaking! Just Strong, Stiff, and built to last! This sucka will hold on to your bars and your steerer tube like an 800 lbs Gorilla! I have never had it slip even through some NASTY Drops! If looks could kill you'd be DEAD for installing this stem!
    Weaknesses:Heavy for you weight weenies out there but most weight weenies don't Freeride or downhill! So Nothin, Nada, Zip, Zero! BULLIT PROOF!
    Similar Products Used:Thomson, RaceFace, Kona, Specailized and others!
    Bike Setup:Kona Stinky with Jr. T Fork, Azonic A-frame pedals, Raceface Diaboulus Group for Freeride!
    Bottom Line:First off I am a Freerider Not just a Downhiller!

    As for this stem it is close to bullit proof. I would recommend this stem to anyone who rides through nasty trails and loves to Freeride and do massive drops! It has yet to slip or creak at all! If looks could kill then this stem has it all! After you install it take time to just look at it pearched up there! The graphics are awesome just wish they were integrated into the stem. You know some nice laser eching, I guess that might ruin the strength of it though! If your a weight weenie then go some place else but if your freeriding and not building your bike up tough, then it will more than likely it's gonna break really soon. Heavy Duty means Heavy weight no way around it, if your looking for a really strong stem for Freeriding or Downhilling get this one and it will be your last one you buy, EVER!!!! PEACE!!!!!
    Value Rating:5Overall Rating:5

    Submitted by Clark a Weekend Warrior from Lethbridge Ab
    Date Reviewed: August 16, 2004
    Favorite Trail:C.O.P
    Duration Product Used:6 months
    Price Paid: $75.00
    Purchased At:Ascent Cycle
    Strengths:tough as nails will never break. Got the Raceface name. sweet look(ie. Flames).
    Weaknesses:Only weakness is the stem turning purple...I dont really no y it has done it but the whole face plate it purple.
    Similar Products Used:Kona Dh
    Bike Setup:Kona Chute,Hayes Mechs. Dj3, Diablous stem and Dmr Wing bar
    Bottom Line:Good stem...just pissed me off when it turned purple
    Value Rating:4Overall Rating:5

    Submitted by Marco Beutelrock a Downhiller from Sthlm Sweden
    Date Reviewed: March 23, 2004
    Duration Product Used:6 months
    Price Paid: $105.00
    Purchased At:ChainReactinCycles
    Strengths:Stiff as hell. i can´t imagine how this piece of work could break. Light, Stronger then anything. its Bombproof
    Weaknesses:None.
    Similar Products Used:Kona klump, Azonic shorty, Funn and som more...
    Bike Setup:Kona Stinky 02 color stripped. Marz. JR T-04. Raceface BB, Diablo Steam. MRP Chain guard. Mavic 729 EX. Tioga White Tiger 2.5. Hayes HFX-9 DH. XTR RR rmech. and much more...
    Bottom Line:Are you in to Freeride or DH, you can´t go wrong with this piece of work ! i got the 50 version and can really feel the connection with the ground thru this stem. LOVE IT
    Value Rating:5Overall Rating:5

    Submitted by Kein a Weekend Warrior from Juneau, AK
    Date Reviewed: March 8, 2004
    Favorite Trail:it would be my fav trail if i told everyone, now would it?
    Duration Product Used:6 months
    Price Paid: $40.00
    Purchased At:LBS
    Strengths:This stem kicks A$$!...those canadians really did it this time...blows all competition from here to timbuktu!
    Weaknesses:none what so ever!...what'd you expect...its raceface
    Similar Products Used:kona dh, truvativ Hussefelt
    Bike Setup:'02 RM switch whit '02 super t 170mm, hayes hfx mag dh, single tracks front and rear, with marzocchi 20mm hub up front and xt rear, titec beserker dh, raceface prodigy dh cranks w/ bashring, maxxis hiroller front, 2.7, maxxis mobster rear 2.5
    Bottom Line:Best stem out there, wont slip or squeak...this stem is the sh*t...perfect for FR or DH. the Ultimate Stem! i give it 5 flamin hot peruvian peppers of death and all that is doom!! Have a nice day!
    Value Rating:4Overall Rating:5

    Submitted by chad a Downhiller from irvine
    Date Reviewed: February 26, 2004
    Duration Product Used:Less than 1 month
    Strengths:short and stocky, no sharp ends to hurt yourself on, not that heavy, also looks are stealth
    Weaknesses:none
    Similar Products Used:marzocchi standard stem
    Bottom Line:seems beefy no flex and i definetely like the looks of it. if a manufacturer can make a product strong and look good to then i think that they have come up with the perfect product.
    peace
    Value Rating:5Overall Rating:5

    Submitted by nic a from New Zealand
    Date Reviewed: January 29, 2004
    Favorite Trail:Redwoods
    Duration Product Used:Less than 1 month
    Price Paid: $70.00
    Purchased At:Jenson
    Strengths:Unearthly.
    Weaknesses:The red flames are really just stickers.
    Bike Setup:Rigid One. Now with laser etched flames.
    Bottom Line:Ok. Who didn't buy this for its looks?

    There are so many cheap billet alloy Azonic shorty clones out there, why didn't you save yourself 40 bucks? Who ever heard of anybody breaking a DH stem instead of their bars or headtube? The only time i have seen trouble with this sort of thing is due to over torquing bolts, without grease.

    I got one.

    The Diabolus stem is lighter than it looks. Strong and stiff as it looks. If you want a confidence inspiring stem that you can forget about, this is not the stem for you. This stem is in your face (ouch), but i have absolutely no doubt that it will hold my bars to my steerer tube no matter what i throw it at.

    Has an innovative interlocking faceplate which looks to even the tension on your bars and probably has a payoff in strength.

    Has etched flames which have a psychological effect that is worth the purchase price alone, and will probably have a payoff with the opposite sex...
    Value Rating:3Overall Rating:5

    Submitted by Chris Lopes a Weekend Warrior from South Kingston, RI, USA
    Date Reviewed: December 30, 2003
    Favorite Trail:Acadia-Breakheart
    Duration Product Used:6 months
    Price Paid: $70.00
    Purchased At:Jensonusa.com
    Strengths:Super heavy duty, looks great, never slips, bolts are sturdy so it's easy to work on/adjust.
    Weaknesses:Weight but, what do you expect with such a hardcore / heavy duty product.
    Similar Products Used:Race face Deus, Kona Clump
    Bike Setup:Red Foes FXR w/ Ti Curnutt, Mavic Crossmax wheels, Avid Mech. disc's, Fox TALAS rlc, Race face prodigy cranks......
    Bottom Line:I'm extremely happy with this stem. Definately top of the line... 100% hardcore!
    Value Rating:5Overall Rating:5

    Submitted by Bicky a Weekend Warrior from Montana
    Date Reviewed: December 3, 2003
    Favorite Trail:who cares
    Duration Product Used:1 Year
    Price Paid: $90.00
    Purchased At:Bike Doctor(Missoula, MT)
    Strengths:strong, light, stiff and is better looking than your girlfreind
    Weaknesses:sometimes it just looks to pretty
    Similar Products Used:kore, azonic, titec
    Bike Setup:Bullit, SuperT, .243 BMX steel handlebar
    Bottom Line:this stem combined with my .243 bmx handlebar means absolutely no flex up front. NO WORRIES MAN
    Value Rating:5Overall Rating:5

    Submitted by Travis McSorley a Downhiller from Klamath Falls, OR, United States
    Date Reviewed: November 30, 2003
    Favorite Trail:Cradle to the Grave
    Duration Product Used:Less than 1 month
    Price Paid: $115.00
    Purchased At: