Building up a new hardtail mountain bike... again!

In this video, we totally rebuild my hardtail, and then ride the whale tail for the first time without rear suspension. Overall, this build was quite rushed due to our need to continue filming for the other channel, but if you decide to build your own bike I recommend taking your time! A lot can go wrong on a mountain bike, and your safety depends on it.

Sync'r Carbon
This videos includes mentions, logos, and products directly associated with Diamondback bicycles, who is a sponsor of Berm Peak Express.

Follow me on Instagram sethsbikehacks
Berm Peak Merch

The following companies have sent me products for the video, with the understanding that they might get screen time. They are not affiliated with the channel as sponsors.

OneUp EDC Tool
Oneup Components kindly send the EDC tool, handlebars, and stem for this build. If you would like an EDC tool and do not want to thread your fork, just wait for the adapter to come back in stock.
Wheels manufacturing sent over the bottom bracket and some spare derailleur hangers. Their website-based derailleur hanger and bottom bracket finder is actually one of the best such tools I've seen.
Crankbrothers sent me a set of pre-release Synthesis alloy rims to test out a few months ago and now that they're being sold to the masses I'm allowed to talk about them. These have been on my bike since January.
Thanks for sending this bleed kit, Truman! I currently have all my bleed supplies in an oily disorganized pile, so this was a welcome addition to the shop.

Music in this video is from


  1. Henry jackson

    Henry jackson2 päivää sitten

    When does the documentary come out

  2. Max Graff

    Max Graff4 päivää sitten

    Big fan

  3. Nellie Griffiths

    Nellie Griffiths9 päivää sitten

    The thing that eats my soul is the fact that u heat shrink your cables hahah🤮

  4. Chase Flanagan

    Chase Flanagan5 päivää sitten

    It’s heat shrink tubing

  5. Pelle Runesten Numelin

    Pelle Runesten Numelin10 päivää sitten

    how high are you Seth?:)

  6. Chase Flanagan

    Chase Flanagan5 päivää sitten

    Wtf are you talking about

  7. Jonah Courtemanche

    Jonah Courtemanche11 päivää sitten

    Thank- You God, Thank - You God, Thank - You God, Thank - You God.

  8. Jonah Courtemanche

    Jonah Courtemanche11 päivää sitten

    God ( Jesus Christ. ) Will Always Be With You Forever And Forever And Forever And Forever For All Eternity.

  9. Eugene Gomez

    Eugene Gomez15 päivää sitten

    I love all your bikes, and a fan of yours, i have a bike w/c my son is now using it and owns it. It is only a cheap bike, me and my son is a bike enthusiast but unfortunately i cant aford to buy another so we just share for 1 bike. can i have those parts of yours that you removed to your build bike even old ones? Only those parts that you dont want to use, To make my sons bike even look a li'll bit better,.. before his birthday comes. I hope that you can help me with. Thanks and more power to you...

  10. rojele sam deocampo

    rojele sam deocampo16 päivää sitten

    Mr Seth you have the same name as my son, any chance you can give away your old bike to me..? i cant afford to buy one, i just borrow from my peers.. hehehe..

  11. Franic

    Franic17 päivää sitten

    How mouch did it cost at end?

  12. Franic

    Franic5 päivää sitten

    @Chase Flanagan ???

  13. Chase Flanagan

    Chase Flanagan5 päivää sitten

    If you have to ask too much for you

  14. Seamus Matthew

    Seamus Matthew17 päivää sitten

    Can you work on my bike

  15. Jase Pfaff

    Jase Pfaff18 päivää sitten

    I’d like to get a mtb but there so expensive

  16. Juan Antonio Albarico

    Juan Antonio Albarico19 päivää sitten

    can i have a handle bar pls flat one pls

  17. Chase Flanagan

    Chase Flanagan18 päivää sitten

    Yes check email from seth biker hax second accou

  18. John Ries

    John Ries21 päivä sitten

    Hey Seth, are you still riding the 2.8s? I too have the Sync’r carbon and love the bike but I’ve been debating siding the tire down to maybe 2.6/2.5 hoping it will give a little more precision and a little less floaty feeling. Any thoughts? Love your channel, keep up the great content!

  19. James Weldon

    James Weldon22 päivää sitten

    Are you worried about the heat damaging the brake oil

  20. Blaze Braff

    Blaze Braff24 päivää sitten

    i’ve watched this video so many times lmO

  21. Milo

    Milo24 päivää sitten

    Seth's hardtail is now different, but kinda the same...

  22. Big Black Dawg

    Big Black Dawg27 päivää sitten

    I’d always said I’d never buy a carbon bike. I mean it’s only because I’m broke and can’t afford them normally, but now that there are so many people with lots of money and upgrade bikes a lot, I’ve been able to buy 2 carbon frames that I’m going to build up and honestly when they’re done, I will have bikes that I can ride for a very long time, unless I mistreat them. I bought a Giant hardtail mountain bike that is about 5 years old last month, it’s in nearly new condition and I paid $140aud for it. My first ever mountain bike was in 1991, it was a Repco steel frame 10 speed with conventional brakes and it cost $199. It’s insane just how cheap it is to get good bikes for now.

  23. ProbablyLucky

    ProbablyLucky27 päivää sitten

    14:50 "A little the same, but kinda different."

  24. ProbablyLucky

    ProbablyLucky27 päivää sitten

    6:11 "I cannot stress how much this is not a tutorial."

  25. ProbablyLucky

    ProbablyLucky18 päivää sitten

    @Chase Flanagan Did you? He doesn't actually say that there, I just thought the quote would fit there.

  26. Chase Flanagan

    Chase Flanagan18 päivää sitten

    Yeah we a watched the video

  27. Shameless LEGEND

    Shameless LEGENDUukausi sitten

    It's sad cause he seems to be trying really hard to make diamondback look good

  28. Chase Flanagan

    Chase Flanagan18 päivää sitten

    @Shameless LEGEND i see what you mean, it’s probably that he does like the bike but has to mention it as part of the brand deal

  29. Shameless LEGEND

    Shameless LEGEND18 päivää sitten

    @Chase Flanagan no they are great, I ride one, it's just that the way he talks about it seems kinda forced

  30. Chase Flanagan

    Chase Flanagan18 päivää sitten

    It is a sponsor so you can’t trash talk really but i don’t think he’d be riding for them for so long if they made bikes he didn’t like

  31. Kana

    KanaUukausi sitten

    I just realized we have matching tires, suddenly not that disappointed with everyone laughing at me with my 2.8 tires

  32. Ace YT

    Ace YTUukausi sitten

    0:29 you can do what on them😳😳

  33. John Pell

    John PellUukausi sitten

    How does a fox 34 compare to a fox 36 on a hardtail?

  34. doran seddon

    doran seddonUukausi sitten

    really wish i could afford some of these beautiful bikes

  35. Matty Osborne

    Matty OsborneUukausi sitten

    Changing the bottom bracket is my next job on my trail bike

  36. L

    LUukausi sitten

    Watching him try and remove a star nut, I would never let him work on one of my bikes. lol

  37. Golden Dragon 108

    Golden Dragon 108Uukausi sitten

    6:25 That face made my day

  38. Tomek Kopanczyk

    Tomek KopanczykUukausi sitten

    listening to your channel is highly addictive even without watching :) great job

  39. MotoBros YT

    MotoBros YTUukausi sitten

    What type of dog is that?

  40. Chase Flanagan

    Chase Flanagan18 päivää sitten

    German Shepard

  41. Derek K

    Derek KUukausi sitten

    I wish he said how much travel the fork has.

  42. William Macmillan

    William MacmillanUukausi sitten

    I’ve watched this so many time

  43. norman madden

    norman maddenUukausi sitten

    Hand grip shower thought: "One ring to rule them all, and in the hand-grip bind them".

  44. Lex Estrada

    Lex Estrada2 kuukautta sitten

    What is the wheel size of your bike?

  45. Chase Flanagan

    Chase Flanagan5 päivää sitten

    36er prototype watch the bike check video

  46. Hammer 9284

    Hammer 92842 kuukautta sitten

    Still watching in 2021

  47. tumbleweed mtb

    tumbleweed mtb2 kuukautta sitten

    I just got my first full squish already missing my hardtail XD

  48. Ali Ouared

    Ali Ouared2 kuukautta sitten

    My wish is a beautiful bike

  49. 234wdsd

    234wdsd2 kuukautta sitten


  50. Little Mangz

    Little Mangz2 kuukautta sitten


  51. BIGED 20

    BIGED 202 kuukautta sitten


  52. David SFS

    David SFS2 kuukautta sitten

    I dare u to build a bike with symmetric cranks

  53. Taylor Davy

    Taylor Davy2 kuukautta sitten

    Speaking on the wheels flexing sideways for suspension when leaned over; that is a known factor in motorcycling, although they do it differently. Companies advertise that their frames are X% less stiff laterally for improved tire contact while cornering and hitting bumps. The dynamics of cycling powered or not sure is interesting, flexible wheels for mountain biking, flexible frames for motorcycles!

  54. Mick Bijker

    Mick Bijker2 kuukautta sitten

    Cane you pleas do a builde with your wife

  55. Gaming with God

    Gaming with God2 kuukautta sitten

    I am watching your videos from Assam

  56. Barcakid

    Barcakid3 kuukautta sitten

    Help ban TikTok it is a very bad drug. Peaceful Protest New York City at March 27 4:40 PM to ban this TikTok drug.

  57. Barcakid

    Barcakid3 kuukautta sitten

    Help ban TikTok it is a very bad drug. Peaceful Protest New York City at March 27 4:40 PM to ban this TikTok drug.

  58. Barcakid

    Barcakid3 kuukautta sitten

    Help ban TikTok it is a very bad drug. Peaceful Protest New York City at March 27 4:40 PM to ban this TikTok drug.

  59. Barcakid

    Barcakid3 kuukautta sitten

    Help ban TikTok it is a very bad drug. Peaceful Protest New York City at March 27 4:40 PM to ban this TikTok drug.

  60. Chase Flanagan

    Chase Flanagan18 päivää sitten


  61. unboxing with alperen

    unboxing with alperen3 kuukautta sitten

    499 dislikes right now lol

  62. jhfdsjhf jhfjwhfw

    jhfdsjhf jhfjwhfw3 kuukautta sitten

    The placid seashore considerably joke because sturgeon multivariably flap next a afraid desert. sedate, bent geography

  63. Mystic

    Mystic3 kuukautta sitten

    There's one thing you didn't do, Stare at it.

  64. Moose Tika

    Moose Tika3 kuukautta sitten

    No one: Seth: *sees nice, expensive bike* LETS RIP THIS DOWN AND REPLACE THE PARTS!!!!! The manufacturer: I literally worked so hard on this, it’s perfect by itself!

  65. Waris Kumar

    Waris Kumar3 kuukautta sitten

    When u want the star nut, it's not in the fork, but when u don't want the star nut, its in the fork.

  66. Michael cawley

    Michael cawley3 kuukautta sitten

    With old microspline you could line it up half a degree off to mess with your buddies it was just enough that it felt off but didn’t look very off

  67. Matt

    Matt3 kuukautta sitten

    beginner / wanna be bike mechanic question lol, is their a tool kit I can buy that wont break the bank that will have everything I need to take apart and build a bike? Thanks for the great video content

  68. Цане Димитров

    Цане Димитров3 kuukautta sitten

    10:18 It's just so obvious that Seth is sponsored by them yet he is still trying to act like they're a groundbreaking innovation

  69. Chase Flanagan

    Chase Flanagan18 päivää sitten

    He’s not sponsored lmao

  70. Marc Nicolae

    Marc Nicolae3 kuukautta sitten

    i wish i could have one of those bike.. i cant afford another one...i miss old days when i have bike, but was stolen.. i use your video to feel a bit better , cuz i dont have bike . u are doing great job, ! keep going ! fan from Romania .

  71. vince

    vince3 kuukautta sitten

    hi! would just like to ask for advice im a newbie trail biker and cant decide for my upgrade. is it better to buy a Mid end aggressive hard tail Commencal/rocky mountain ht frames and likes or an entry level full sus. like giant trance or merida one forty 400?

  72. Vieth Knorr

    Vieth Knorr3 kuukautta sitten

    First question, how much money did you have ro spend?

  73. Witold Wolnowski

    Witold Wolnowski3 kuukautta sitten

    I discovered your channel yesterday evening. I love the way you present everything. I wish I had discovered you sooner but it's never too late I guess🤷‍♂️😀

  74. zen master

    zen master3 kuukautta sitten

    Hope once everything got back to normal,, you do a tour here in the Philippines which you can ride on our mountains and jungles.

  75. Pratyay Agrawal

    Pratyay Agrawal3 kuukautta sitten

    my mtb just got stolen and all the mtb videos are in my recommendations

  76. Joshua Sheppard

    Joshua Sheppard4 kuukautta sitten

    Whenever I remove a broken star but I just nick it out with a copper pipe

  77. Dilip Kumar Nayak

    Dilip Kumar Nayak4 kuukautta sitten

    Hardtails cycle frem price please send me

  78. KeyanDaFishy

    KeyanDaFishy4 kuukautta sitten

    10:35 u can see him zoning out while listening to a industry nine casset

  79. sir mez

    sir mez4 kuukautta sitten

    seth is king, come back soon!

  80. Jacob Ford

    Jacob Ford4 kuukautta sitten

    I want to see you ride a bike with misaligned crank arms that would be hilarious

  81. bananas stuff

    bananas stuff4 kuukautta sitten

    Nah, you just cant pedal. It's just shit.

  82. Nikolaos Sakellis

    Nikolaos Sakellis4 kuukautta sitten

    I got my first high end bike and went from a 4 year old shimano altus 3 by 8 to a full sram gx eagle 1 by 12 drivetrain. Best decision of my life.

  83. Dale Jared Pinili

    Dale Jared Pinili4 kuukautta sitten

    hoping that i can afford hydraulicbrakes someday :>>>>>>>

  84. Thila Siva

    Thila Siva4 kuukautta sitten

    in ur opinion what do you think about the revgrips? i am just curios

  85. Nitrouss _

    Nitrouss _4 kuukautta sitten

    I gotta say all i do is watch his vids love them

  86. John Kim

    John Kim4 kuukautta sitten


  87. inxctive

    inxctive4 kuukautta sitten

    back transmission ????

  88. Chase Flanagan

    Chase Flanagan5 päivää sitten

    Wtf u talking about

  89. Chase Flanagan

    Chase Flanagan18 päivää sitten


  90. Marvio Rose

    Marvio Rose4 kuukautta sitten

    No matter how you slice it carbon fiber is inferior to good light aluminum

  91. Chase Flanagan

    Chase Flanagan18 päivää sitten


  92. bananas stuff

    bananas stuff2 kuukautta sitten

    Yeah. I would never spend my money on carbon.

  93. Noah Jones

    Noah Jones4 kuukautta sitten

    Let’s be real this is not your first time watching this!

  94. HC_Fishing_UK

    HC_Fishing_UK4 kuukautta sitten

    We’re can I get that multi tool

  95. Chase Flanagan

    Chase Flanagan18 päivää sitten

    Pretty sure its on Howdy

  96. Greecher The Creature

    Greecher The Creature5 kuukautta sitten


  97. Louk The crazy boy

    Louk The crazy boy5 kuukautta sitten

    6:20 thats eht u don't just hammer allen keys into ur fork

  98. Victoria the green cheek conure

    Victoria the green cheek conure5 kuukautta sitten

    Is no one talking about how Seth cleared the driveway gap when he brok his hardtail

  99. Xtopher Martin

    Xtopher Martin5 kuukautta sitten

    I've got a 2011 Trek X-Caliber. Is it worth building it up or should I move to something with more modern geometry? It's got a 69 degree head angle, but the G2 fork smooths it out. Should I go 1x12 with wider bars? Or just go modern?

  100. bananas stuff

    bananas stuff4 kuukautta sitten

    Go modern 100%

  101. Prince Allen Madrigal

    Prince Allen Madrigal5 kuukautta sitten

    Dreams bike😍😭but gonna have that 😞

  102. Aidan McClanahan

    Aidan McClanahan5 kuukautta sitten

    U should make a vid where u go through berm peaks features over and over again

  103. douglas gruenwold

    douglas gruenwold5 kuukautta sitten

    how tall is seth

  104. Dianara Briones

    Dianara Briones5 kuukautta sitten

    can i have 1 of your bikes

  105. Chase Flanagan

    Chase Flanagan18 päivää sitten


  106. Striker

    Striker5 kuukautta sitten

    How are your Tektro's brakes after a few months?

  107. bananas stuff

    bananas stuff2 kuukautta sitten

    My tektro brakes are fine. They work just fine, don't hesitate about them.

  108. Milkie s Vlog

    Milkie s Vlog5 kuukautta sitten

    I wish I have a frame bike my bike is steal🤧

  109. Cipher B25

    Cipher B255 kuukautta sitten

    I like when I see you asembling the skeleton to wowers bike.

  110. zack jurgenson

    zack jurgenson5 kuukautta sitten

    Same I have literally the exact same mountain bike bit different parts I like fox and crap

  111. Silixy Drimur

    Silixy Drimur5 kuukautta sitten

    The problem with the hardtail serie I'd tbat I already watched all of them 😤

  112. Landon Martin

    Landon Martin5 kuukautta sitten

    Seth is the reason I ever started riding mountain bikes


    GRAY GRAY SMAY5 kuukautta sitten

    you can tell he is having so much fun on a hardtail and i have one and can totaly agree

  114. rewop

    rewop5 kuukautta sitten

    I've watched this video 10+ times and I love it every single time

  115. orvielle beatingo

    orvielle beatingo6 kuukautta sitten

    im your fan here in philippines, can you sponsoring my hardtail to make better ? im so excited to hearyou

  116. Chase Flanagan

    Chase Flanagan18 päivää sitten

    Yes i would love to from seth biker hax second acc

  117. Adrian Veidt

    Adrian Veidt6 kuukautta sitten

    seth become so spoiled and soft.

  118. TheSmallTownSender

    TheSmallTownSender6 kuukautta sitten

    What happens when you need to true the wheels and then they are just regular weeks because are the bike mechanics just going to tune them correctly or what?

  119. justin santiago

    justin santiago6 kuukautta sitten

    The sloppy waste worrisomely man because french morally obtain beside a deserted offer. yummy, plastic anthony

  120. šterman

    šterman6 kuukautta sitten

    actually cockpit is more used in road cycling and its handlebars and stem that are one piece

  121. tasos_vts

    tasos_vts6 kuukautta sitten

    I wish i had this bike

  122. Zach Coburn

    Zach Coburn6 kuukautta sitten


  123. dimitral fishing

    dimitral fishing6 kuukautta sitten

    What maxxis tire you got on front

  124. DJ Hoff

    DJ Hoff6 kuukautta sitten

    A good one

  125. Theodore Connolly

    Theodore Connolly6 kuukautta sitten

    bring back the murder machine

  126. Harold Bruno

    Harold Bruno6 kuukautta sitten

    Wow nice bike😍

  127. Ericxy14

    Ericxy146 kuukautta sitten

    Seth: Meh, it’s just a fox 32 Me: OMG ITS A FOX 32!!!

  128. bananas stuff

    bananas stuff2 kuukautta sitten

    That'll be a 34, no?