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Questions tagged [parts]

Bicycle components without which it's not a working bike: wheels, brakes, saddle/seat, bottom bracket, derailleur, stem, handlebars, bolts, etc. Also tag with specific part.

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Internal gear hub - missing parts

I've recently bought a wheel with Shimano Nexus SG-C3001-7R hub. There are some parts missing on it, including sprocket: I already have the compatible shifter (SL-7S50), but it ends with just bare ...
user3518753's user avatar
3 votes
1 answer
96 views

What is this part?

I replaced my back tire. After putting it back on, I noticed this under the toolbox. Only one. It is either from the circular disc brake thing on the right, or the gears on the left. I thought it ...
John's user avatar
  • 227
1 vote
1 answer
82 views

Where in the world can I find a replacement schwinn cup-holder as used on many cruiser bikes for decades? [closed]

As recently as 2018, schwinn catalogs had a “cup-holder series” of cruisers, with a plastic and foam cup holder fitted at the front between the twin top tubes. It degrades under UV, sunlight. I think ...
Henry S's user avatar
  • 267
3 votes
2 answers
147 views

Vintage derailleur identification

I have a vintage Shimano derailleur that I'm trying to identify, specifically to figure out which jockey wheel set is compatible as mine badly need replacing. The derailleur is marked "Shimano ...
Kyle's user avatar
  • 153
7 votes
1 answer
574 views

When replacing balls in Shimano cup and cone bearings, is part number relevant or is size the only thing that matters?

Does the shimano part number matter when replacing the balls in cup/cone hubs? The exact part number is unavailable, and the available shimano bearing of right size does not list my hub as compatible. ...
WornChain's user avatar
  • 1,263
7 votes
1 answer
659 views

Why do threadless stems allow quick removal of the bars whereas quill stems do not?

I prefer quill stems for aesthetic reasons but find them a hassle when it comes to removing the handlebar -- having to strip the bars and remove the brifters. Is there a reason why I cannot find quill ...
A.G.'s user avatar
  • 218
1 vote
1 answer
80 views

Replacement for VP-BC73E Bottom Bracket

I cannot find my bottom bracket online anywhere. It's called "VP-BC73E ". However, I can find loads of "VP-BC73" (E is missing). Would it still fit/work? I found this information ...
James's user avatar
  • 13
2 votes
0 answers
94 views

Look at my trike

About 21 days ago exactly I posted for help identifying some junk in a barn. Today i can show you what these parts were supposed to look like. I've figured out a bunch during the process. The lever ...
Bahry EL's user avatar
4 votes
3 answers
4k views

How much faster would I go with a better road bike?

I have a Cannondale CAAD9-5. Over an identical distance with identical power output, how much faster would I go with a better bike? And what are the things that would lead to the greater speed (just ...
bill999's user avatar
  • 271
3 votes
3 answers
1k views

Find replacement battery for this e-bike

My ebike battery totally died today. I can't find the model number for the battery as it is not written anywhere. Here are the pictures:
user1034912's user avatar
1 vote
1 answer
59 views

How do I find replacement parts for my 1988 Suntour drive train?

I am resurrecting my old commuter which was basically a hard-tail MTB c 1988 with a 3 x 7 Suntour system. What's the least painful method (leaving shifters and derailleur intact) to replace the worn ...
Andy W's user avatar
  • 11
1 vote
1 answer
190 views

Fit a M3 metal screw into a M5 hole

I have a M5 threaded hole into which I need to fit a M3 screw to hold some accessory. I'm looking for the name of the piece I need to make that fit possible. The closest I found are these kind of ...
user avatar
5 votes
1 answer
883 views

What is this little plate found in the Ultegra groupset kit?

I'm a about to install a Shimano Ultegra groupset on my road bike, but I have found a little rounded plate with a sticky band on it, and I don't have any idea of what it is and where to put it. How ...
yesh's user avatar
  • 53
0 votes
2 answers
128 views

Options for renewing drivetrain / upsizing crankset

I currently have a Shimano drive-train and am approaching replacement for the chain and cassette. All parts are Deore XT M780 Series except my cassette which is a HG500-10 11-25 I usually run a ...
Domoninic's user avatar
4 votes
3 answers
525 views

Where did all the Shimano non-electronic groups go?

I wanted to upgrade the components on one of my bikes, from Shimano 105 6500 (1998 9-speed) to 105 R7000 (2018 11-speed). But no reputable online shop has them. And the LBS says they can't get any 105 ...
someguyinafloppyhat's user avatar
2 votes
0 answers
82 views

Cable housing end cap for BR-M375

I replaced the no name brake calipers on an entry-level ebike for Shimano BR-M375. The cable housing for the rear caliper was a bit too long, so I cut off a few centimeters. Then, I put a new 5 mm end ...
olliebulle's user avatar
  • 4,119
4 votes
2 answers
468 views

Replacement Hoods for SRAM Rival 1 Levers

I have a 2020 Kona Rove ST with SRAM Rival 1 shifters/levers/a brifter. It's a 1x11 speed. My local bike shop recently did some work on my bike, and it seems they tore my hood. It was definitely not ...
Will Haley's user avatar
2 votes
2 answers
688 views

Aftermarket options for adjusting Giant Aero Bars angle

I have this Giant 2016 Trinity Pro that I'm trying to make some adjustments to. Currently the stock aero bars stick almost straight out and I'm not super happy with that position. I've really liked ...
blackbrandt's user avatar
2 votes
2 answers
407 views

How to measure sealed headset bearings angle?

I need to find a replacement headset for an integrated system "IS". I can get the required dimensions by removing the fork and taking headtube and steerer tube measurements by using a ...
olliebulle's user avatar
  • 4,119
5 votes
2 answers
774 views

Is there an easily recognized name for this kind of kickstand?

I'm looking for the vocabulary to describe a kind of kickstand that seems pretty much unheard-of where I live. I've seen them particularly on Japanese utility/commuter bikes. The key features are: ...
Tiercelet's user avatar
  • 153
11 votes
1 answer
1k views

What's the name of the piece that holds the fender on (pic attached)

What's the name of this part that holds the fender on? (the back piece between that the rod from the fender is going through) I've lost one but for the life of me can't seem to find what to search ...
paullb's user avatar
  • 213
9 votes
2 answers
612 views

What small parts should I be mindful of when buying a frameset?

I have a project of building a touring bike from scratch by cherry picking every component. I started looking at some potential framesets. One of the candidates is the Surly Disc Trucker. I can see on ...
olliebulle's user avatar
  • 4,119
3 votes
2 answers
403 views

Help identifying and sourcing a part for Shimano brake lever

A few weeks back, when trying to refit the v-brakes on my son's MTB after taking the wheel off, I shattered a threaded plastic washer on his Shimano brake & gear lever (ST EF500). I call it a ...
GrandMasterFlush's user avatar
5 votes
2 answers
639 views

Front Brakes - replace missing part or entire assembly?

I found a project bike that was missing some things and I decided to fix it up. The first image is of the front brake which is missing the piece that clips onto the brake cable. The second image is of ...
Jacksonkr's user avatar
  • 251
21 votes
7 answers
5k views

How maintenance-free can a commuter bike be?

Commuting is hard on bikes, especially when doing it all-year long. Maintenance is essential to assure one can get to work every morning without issues but it takes time and care. Fixed-gear and ...
olliebulle's user avatar
  • 4,119
1 vote
1 answer
139 views

What are the dimensions of a Trek Marlin 7 rear wheel quick release skewer?

My Trek Marlin 7 is size large and has 29-inch wheels. I want to replace the broken quick release skewer of the rear wheel and I need help finding a suitable replacement.
Chimp's user avatar
  • 11
4 votes
3 answers
928 views

Where can I buy a radiused washer?

I recently bought a new set of Tektro R539 Caliper Brakes. These brakes are nutted (non-recessed). Each brake came with one curved (concave, radiused) washer and one flat serrated washer. My front ...
Will Haley's user avatar
10 votes
4 answers
3k views

Is it okay for my rear derailleur to be as "compressed" as this when in the lowest gear on the bike?

Recently replaced the cables on this old road bike. When indexing the cable I notice how compressed this derailleur is and the two cogs are almost touching - it certainly doesn't look right to my ...
Antonio's user avatar
  • 101
9 votes
1 answer
446 views

How should I go about getting parts for this bike?

Backstory I moved into a place and there was an old bike with the wheels & handlebar off. The landlord said I could throw it away but instead I want to try and fix it but it turns out I don’t know ...
Jacksonkr's user avatar
  • 251
4 votes
1 answer
868 views

What is the purpose of non-series Shimano components?

Shimano have many series of components corresponding to different grades and categories of bikes (e.g. their high-end series for MTB is XTR while Dura-Ace is for Road), but they also have what they ...
olliebulle's user avatar
  • 4,119
0 votes
0 answers
98 views

Schwinn AC Performance Plus with Carbon Blue Pedal Exchange

I want to switch out the pedals on my Schwinn AC Performance Plus with Carbon Blue for the Venzo 3-in-1 pedals (I only use SPDs & don’t like the sneaker cages). On the Venzos, the part that ...
alikresta's user avatar
4 votes
1 answer
150 views

What is this tiny part for on the RST 790 fork?

The following picture shows an RST 790 fork from 2010. Anyone knows what the tiny part pointed by the red arrow is for? This part is also present on the RST 777 fork. From another angle and zoomed in:...
olliebulle's user avatar
  • 4,119
3 votes
1 answer
814 views

Fuji bolt fell out please help!

Hi all. I have an old Fuji and there's a bolt that holds the crank in place. It fell out and is lost unfortunately and I am looking for a new one. Does anyone have any ideas? I'd really appreciate it!
Yitz Friedman's user avatar
1 vote
1 answer
226 views

I tried to fix my Kent Seachange, but when I pedal the wheel shimmies over to the right-hand side

It’s not loose, or misaligned on the axle. It just moves to the right and jams against the frame. Did I forget a part? ( From https://www.walmart.com/ip/Kent-Bicycles-Sea-Change-Men-s-26-in-Beach-...
Ethan Miller's user avatar
7 votes
1 answer
228 views

The spin of crankset creates periodic sideways wobble of the whole bike. What is the problem?

I have enountered a strange problem with a fixed gear build: when the wheel/crankset spin, the crankset's rotation creates a periodically pulsating sideways wobble on whole the bike. It can be felt ...
goose_lake's user avatar
3 votes
1 answer
150 views

Determining the correct gear ratio for rear wheel cassette

This is a continuation from my previous topics: determining the rear fork spacing of giant escape 2 2013 rear wheel cassette hub and speed set compatibility question Summary: My bike's (giant escape 2,...
Sina's user avatar
  • 217
5 votes
1 answer
521 views

Is it possible to use a 26mm clamp diameter stem with a 24mm handlebar?

I am considering getting a stem, which is meant for a 26mm grip area diameter. However, the handlebar I want to use it with is 24mm diameter (this diameter is uniform, so 24mm both at the grip and at ...
goose_lake's user avatar
6 votes
1 answer
2k views

How to interpret Shimano compatibility chart?

How does one interpret the delineation of horizontally-aligned boxes on the Shimano compatibility charts? Below is a screenshot (with added blue numbering) for discussion purposes. For example, why ...
ETL's user avatar
  • 265
1 vote
1 answer
86 views

Can I use a different cassette on a SRAM Eagle NX bike for indoor training?

I want to use a bike fitted with SRAM Eagle NX groupset on an indoor trainer, and to have a complete wheel including cassette for use on the trainer. Would it make sense to use another 11 or 12-speed ...
patraulea's user avatar
  • 113
6 votes
2 answers
1k views

Are factory parts the same quality as the spares bought separately?

After I have replaced chain and cassette, should I expect the replaced parts to last more, less or about the same? The rationale behind putting the weaker component in the factory may be that many ...
nightrider's user avatar
  • 7,749
1 vote
2 answers
80 views

Availability of Drop Randonneur handlebars Raleigh 72 grand sport?

Are new handlebars available that are the same, or nearly so, as the early 70's drop, Randonneur handlebars that were available on the grand sports models? From https://www.bikeforums.net/21414951-...
cptbfhrt's user avatar
5 votes
1 answer
430 views

Is a rear wheel with a Shimano 105 hub compatible with a 8 speed cassette?

Hi Bicycles Stack Exchange! I ride a Specialized Allez 2020 and looking to replace the rear wheel. Is a rear wheel with a Shimano 105 hub compatible with the 8 speed cassette the Allez comes with? ...
Luke's user avatar
  • 53
2 votes
1 answer
115 views

Specs to take into account when changing frame on Enduro MTB

The frame of my Enduro MTB is cracked and needs changing. The bike is 10 years old so I will look for a second hand frame and I'd like to be able to use as many of my current parts as possible. What ...
NicoH's user avatar
  • 123
3 votes
2 answers
2k views

The bicycle has Shimano M7100 chain and Shimano M6100 cassette. Should I buy M7100 cassette instead for replacement?

As per shop specs, this bicycle has Shimano XT M7100 chain (and this is printed on the chain so is true) and Shimano M6100 cassette. But there is M7100 cassette available on the market that even does ...
nightrider's user avatar
  • 7,749
-1 votes
1 answer
196 views

What parts are required to convert a bicycle to a front-wheel drive e-bike?

My stepfather purchased a electrically driven front wheel hub. He has asked me to purchase all of the remaining parts required to convert his bicycle to an e-bike with this hub. He resides in Virginia ...
Robert Jackson's user avatar
10 votes
3 answers
8k views

What liquid should I use in an ultrasonic cleaner?

I've ordered an ultrasonic cleaner, to clean up greasy, oily bike parts like chains and cassettes. I want to get them fully clean of contaminants and try a wax-based lubricant. What kind of liquid ...
Swifty's user avatar
  • 12.8k
2 votes
3 answers
750 views

HELP with derailleur upgrade question

I just bought this Aventon Level ebike https://electricbikereport.com/aventon-level-review/ I was wanting to upgrade the derailleur, but I'm not sure which one to get. I don't want the entry level/...
TJ C's user avatar
  • 21
8 votes
1 answer
538 views

Where to find a replacement bolt for this vintage bike?

My vintage bike has some problems. The bolt in the photo (click to enlarge) is on the verge of death. I need to buy a new one, it is about 42mm long. I have no idea where to buy it. Are there ...
Liedekerke's user avatar
5 votes
1 answer
263 views

Strange handle on the left side of Winora Youkatan 12 pro

There is a strange handle (lever) on the left side of my new E-bike (Winora Youkatan 12 pro). It looks similar to the brake or gear shifter, and it is connected to the cable that goes somewhere (...
nightrider's user avatar
  • 7,749
2 votes
1 answer
420 views

Are Shimano cone part-numbers sold in packs of ten and not available to consumers because they are meant to be dealer items?

I see that Shimano has part numbers for every washer, nut, and cone in each hub, but these are sold in boxes of count 10. Is the idea that these (cones, in particular) are consumables and one would ...
Sam7919's user avatar
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