Specialized Rockhopper External to Internal Dropper Post Upgrade
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- Опубликовано: 20 сен 2024
- A little over two years ago, I was at my local bike shop ordering a wheel for one of my road bikes. Over in the display area a bright green mountain bike caught my eye. It was a 2019 Specialized Rockhopper. Long story short, I made it about a mile from the shop, turned around, and bought it for $560.00 US.
Although this was a base level hardtail, and I have other mountain bikes, the Rockhopper accounted for about half of my trail riding in 2020. I ran it in stock 3x8 configuration for a year. Then, I started upgrading the components. As of March 2021, only the brakes and rolling stock remain stock. In fact, I decided to convert from an external dropper post to an internal one, a KS eTeni with 100mm of extension. The swap was about as easy as it gets.
The simple fact is, this is really fun bike! The costs and stock specifications are below.
Specialized Rockhopper Costs
Initial purchase: $560.00, local bike shop
Wake aluminum handlebar, 720mm: $28.94 (2020 price), Amazon.com
KS eTENi Dropper Seatpost - 30.9mm, 100mm, $115.00 US, worldwidecyclery.com
RockBros resin flat pedals: $34.99, Amazon.com
Wake aluminum stem, 45mm: $9.97, Amazon.com
Rockshox Judy Silver TK 100mm travel air fork: $169.00, worldwidecyclery.com
JG Bikes 9 speed conversion kit: $99.00, Amazon.com
IFX crank: $48.00 Amazon.com
Snail 34 tooth narrow-wide chain ring: already owned, $0.00
Total: $1,064.90 US
Stock Specifications
FRAME A1 premium butted alloy
SEAT BINDER Alloy, quick release, 34.9
FORK SR Suntour XCT 29, 28mm stanchions, Rx Tune, coil spring, QR, 100mm travel (size-specific), 46mm offset
STEM Stout 3D-forged alloy, 31.8mm, 6-degree rise (stock)
HANDLEBARS Stout Mini Rise, alloy, 9-degree backsweep, 15mm rise, 31.8mm (stock)
GRIPS Specialized Trail Grips, lock-on (stock)
SADDLE Venge, steel rails
SEATPOST Alloy, 12mm offset, 2-bolt clamp, 30.9mm
FRONT BRAKE mechanical disc, 180mm
REAR BRAKE mechanical disc, 160mm
FRONT DERAILLEUR Shimano Altus FD-M315
REAR DERAILLEUR Shimano Tourney RD-TX800, 8-speed
SHIFT/BRAKE LEVERS Tourney TX, 8-speed
CASSETTE SunRace, 8-speed, 11-34t
CRANKSET Stout 3x, forged alloy
CHAINRINGS 22/36/44T
BOTTOM BRACKET Square-tapered, 73mm, internal bearings, 122.5mm spindle
RIMS Specialized alloy, disc only, double-wall, 25mm inner width, 32h
FRONT HUB Formula 6-Bolt, disc, 100x9mm spacing, quick-release, 32H
REAR HUB Formula 6-Bolt freehub, disc, 135x9mm spacing, quick-release, 32H
SPOKES Stainless, 14g
FRONT TIRE Ground Control Sport, 29x2.3"
REAR TIRE Fast Track, 29x2.2"
INNER TUBES Schrader, 40mm valve
Great video, made my dropper's inscrutable instructions clear. Look forward to riding my Rockhopper Sport with it, thanks for helping me get it done!
I have the rockhopper 2019, you have to move a little bit the transmission to find the hole on the post and use the internal routing.
Thank you so much for the video. Enjoy your bike ;-)
Just bought a new Rockhopper Comp 2023 plus a dropper post for it, and this video has been perfect for showing how the internal cable routing goes. Thanks!!
I'm happy I could help.
That answers a lot of questions.
Glad to help. :)
Thanks for the video. Was looking for a dropper for my son's Rockhopper XS, he is almost 11. Hopefully it will make it a bit easier for him when on the trails. We were just leaving his seat low for the time being and he looks a bit awkward trying to pedal the flats. Went with the Brand-X Ascend dropper.
I am sure he will find the dropper to be a game changer.
Cool video as always. Hope you are feeling better. Cheers
Thanks! I am feeling a lot better.
@@JimsObsessiveCyclingDisorder Thanks great to hear. So keep the videos coming yeh
This is very cool feature!
I also have rockhopper 2020, and recently I enjoing riding in the mountains. And I really feel the need for it, so I'm going to install it. Thank you for video. Your video will help me. 🙂
Let me know how it goes. 🙂
Let me know how it goes. 🙂
Hi Jim, thanks for uploading this video, it's super helpful. I am installing a dropper post on a 2021 Rockhopper and having trouble with installing the cable housing. Can you confirm what is the outer diameter for your cable housing please? I have a suspicion that the stuff that came with my X-Fusion Manic dropper post might be too big for the frame's channels as I am unable to thread it in!
Hi, I put the calipers on it, and it's 4.1mm. Basically, just a standard shifter cable I got at my local bike shop.
I just looked at my 2021 Rockhopper and it has screws for a bottle holder in the way of the post on the seat tube. I can't even lower the stock post much further... how did you solve this?
The problem is that the rivnut protrudes into the down tube. There are 2 solutions I can think of. Either a shorter non-droppper post (bearing in mind to transpose the minimum insertion depth) or drilling out the rivnut. Bike Teacher has a video on how to remove a rivnut.
@@JimsObsessiveCyclingDisorder thanks for your answer! do you have the exact specs of your dropper post maybe? I know its 30.9mm, and it seems like the stock post is 400 mm. But I think I'd use a smaller one with a 150 mm raise, but then I don't know what length to get...
Maybe you can give me a hint, else I'd take a look at my local bike shop.
@@TomyyY90 As I recall, the KS eTeni has a travel of 120mm. I'm unsure how long the base portion is, but it does not bottom out on the bottle cage studs.
Hey Jim. I’m installing a dropper right now with this as a tutorial. Easy to understand, however when inserting the cable into the seat tube, did you also insert it in the little plate under the bike with the 3 holes in it to for better cable routing?
I used the frame hole near the head tube to start, routed it down the downtube and through the cable gap under the bottom bracket, then up the frame port on the seat tube. Much easier than on my Polygon Suskiu!
I used the frame hole near the head tube to start, routed it down the downtube and through the cable gap under the bottom bracket, then up the frame port on the seat tube. Much easier than on my Polygon Suskiu!
What chainring did you upgrade to? It is a really nice bike!
Thanks. I went with a Snail 30 tooth narrow wide unit.
Can the seat go further down? I want to do it but in the lowest setting i need it further down is it possible?
I set mine about an inch higher than "slammed", as such there is a little adjustment available.
hi,, at 3.14 into the video it would be great to see the cable from the other side and where is goes?
Hi,
The cables for the rear brake and rear derailleur each go into one of the two downtube ports on the nondrive side. The dropper cable goes into one of the downtube ports on the drive side.
@@JimsObsessiveCyclingDisorder thanks -it was more about getting it into seat post - it wont go in
@@paulhughes3889 gotcha. I had to wiggle it around to get it through thevlarge port under the bottom bracket and then up the port on the back of the seat tube. I'm guessing you already looked for an obstruction.
How hard was the install ?
It was the easiest internal one I've done.
What your size bike ?
Its a mefium.
Great video!! Hey Jim give me a shout out on your next video :D