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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1answer
51 views

Trying to identify part name and correct bolt size

my father-in-law sent us a bike, however one part was lost in transit. This is an image found online, but shows the part(s) in question. What is the name of the toothed plate underneath the ...
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9answers
18k views

What initial improvements can I make to a Schwinn Sidewinder?

I bought a Schwinn Sidewinder from Walmart last night in a desperate attempt to get some exercise. I took it home and rode intensely for an hour, it was fantastic! I may be wrong, but I see bicycles ...
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1answer
391 views

What is on the handlebars of this bike?

Sadiq Khan, the current Mayor of London, was spotted riding a (strikingly regular) bike around in May 2020. What is the contraption attached to the center of his handlebars?
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4answers
712 views

What should be my first upgrade?

I've been planning to upgrade my Foxter Evans 3.0 (Low budget Bike) to lessen it's weight. What should I replace to lessen it? Also I'm a 5'11 person and my frame is a medium. Should I consider ...
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1answer
69 views

What's the generic name for this threaded/decorative “stem cap” on a Delta threadless steer tube extender

I picked up one of these Delta threadless stem risers / steer tube extenders so I could try out different handle bars heights on my gravel bike without going through a bunch of stems (since shops near ...
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3answers
109 views

Assemble gravel bike from parts

Is there any guide or what should I know to assemble a bicycle from parts instead of buying a complete new one ?
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1answer
83 views

Seat mounting rails bent out of shape

Recently I crashed my bike, and since then, the seat has been tilted towards the left side. I know very little about bikes and the associated terminology, but I think what happened is that the rails ...
8
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3answers
6k views

Can a Shimano XT (mountain) hydraulic disc brake caliper be used with an Ultegra STI road brake lever?

Specifically, is the XT BR-M8020 mountain caliper compatible with an Ultegra hydraulic road brifter like like the ST-R8020 or ST-R8070? I have confirmed that they both use BH90 brake hose ("high ...
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11answers
21k views

How does a bike's weight affect the overall experience of owning it?

Naturally, carrying a light bike up the stairs is much more enjoyable compared to a heavier bike. Are there any other aspects of a bike which are affected by its weight? For example, would the weight ...
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1answer
95 views

Direct mount vs. hanger derailleur

Currently repairing a bike that I got off the road for free years ago. Around three years ago, a stuck link caused a chain jam while pedaling at high speed, causing the metal around the b-knuckle on ...
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2answers
115 views

What would be the modern equivalent for 2001 Specialized RockHopper?

My beloved and dependable 2001 Specialized RockHopper A1 were stolen by some lowlife about two weeks ago. After filing a complaint with the local police dept. I filed a claim with my insurance company....
4
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0answers
305 views

5 arm cranksets versus 4. Which is better and why?

I'm looking to buy a Sora triple crankset. Shimano make two types one has 5 arms and the other only has 4 arms. Which should I get and why would that be a better choice? I'm a slow-ish rider. I'm 50 ...
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2answers
2k views

How to remove old kickstand

I'm trying to cannibalize an old bike but am having trouble removing the kickstand: I've tried screwing the bolt counter-clockwise†, which indeed made it looser, but it's not getting loose enough to ...
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2answers
5k views

Is there a downside to spoke protectors?

A few weeks ago, the derailer on my touring bike caught on the chain and ripped itself off the frame. (See the link below for more info on the incident.) The spoke protector was cracked in half by ...
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1answer
49 views

Plastic insert damaged when tried to open gravity wheelguard ixow

Can anyone tell me where I can find to buy the plastic insert from the wheelguard?
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3answers
1k views

What is this rubber ring around the top tube for

I have seen these on a few bikes. What is the purpose :S
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1answer
73 views

Do these parts fit my Giant Escape 2 2018?

This is my bike Giant escape 2 2018 I want to change the groupset (for fun) for this one aliexpress link, Basically it's a Shimano Deore M6000 2x10 groupset (without the brakes) I'm almost sure that ...
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2answers
363 views

Brompton Rear Brake Caliper Assembly Schematic

What is the list and order of components that thread onto the Brompton's rear brake assembly from the brake caliper through to the Lower Stop Disc for an M6R? At some point on a recent ride down ...
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0answers
47 views

Can't find a “friction screw” for a friction shifting system

I recently broke one of the two speed levers ajuster (friction screw) that adjust the pressure between the levers and the cable. It's made in plastic as shown in the picture below. I would like to ...
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2answers
596 views

Repair parts from Shimano - What are these part for?

I got a new Cannondale bike with hydraulic disc brakes and Tiagra set from Shimano. With the bike came seom parts which I cannot identify. I think they have to do with the brakes, but can't find ...
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0answers
26 views

Are Tacx turbo trainer frames the same across models?

All of Tacx' wheel-on turbo trainers look like they have the same frames (looking at current rather than older models). Can anyone tell me whether it's possible to upgrade from say a Flow to a Vortex, ...
6
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3answers
702 views

Recovery from a cycling mishap

I took my bike for the first ride of the season yesterday and unfortunately it was pretty short. As I was cycling through the rear gears I hear a plinking sound and then a large clunk. I stopped ...
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2answers
153 views

Can I use a 1x10 wide range cassette with Shimano SL-BS79 bar end shifters?

I'm putting together a drop bar hybrid conversion for a gravel bike and want to run a 1x10 drivetrain. So far the only shifting component I have is a pair of Shimano Dura-Ace sl-bs79 10 speed bar end ...
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3answers
439 views

Swapping parts from old bike to new frameset

I have a Piave (around 2009-ish year) road bike with a frame that has become to small for me. It has pretty good components i.e Shimano Ultegra and threadless stem etc. There is a 2014 S-Works Venge ...
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3answers
156 views

Commuting road bike build [closed]

After a bit of research, I decided to build a road bike in order to commute. I'm not looking into buying one since I don't find it that interesting and personal. What used bike and parts should I buy ...
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2answers
75 views

Commuter/ road bike from a MTB frame

I have an entry-level 27.5 mountain bike and I will be moving to London this summer. Since I won't be riding it on trails anymore I thought I can keep the frame and wheels and build a commuter bike or ...
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0answers
79 views

Shimano 9 Speed Cassette with Microshift Advent 9 Speed Road Shifter

I fancy setting up my old but amazing Cannondale F1000 with a dropbar and corresponding road shifters.The only affordable system I could find for that is the Microshift Advent 9 group. I'm happy with ...
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2answers
2k views

How to identify counterfeit Shimano parts?

I bought a pair of Shimano brifters from eBay, brand new. They have a few bumps and marks on the plastic and metal parts that look like poor quality manufacturing to me. Can anyone tell from these ...
2
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2answers
130 views

Should “universal pedals” be avoided?

Are universal pedal axles weaker than standard axles? If so, should they be avoided? These are inexpensive pedals so let's focus on inexpensive normal, solid axles vs these universal pedals. Each ...
4
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3answers
138 views

Does the front derailleur limit chain ring size?

Does the front derailleur have limits to which size chain rings can be used? I have a groovy old 1988 Schwinn Prelude and for the most part it does just what I need. However there are some steep ...
3
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3answers
169 views

Bike spare parts in South America

I'll soon start a rather long trip from Ushuaia in southern Argentina to Alaska in the north of North America. As I'm from Europe (France), I don't really know what to expect about spare parts for my ...
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2answers
2k views

Where to get replacement bike frame cable entry grommets?

Does anybody know where to get more of these ? These hold shift and/or brake cable ferrules where the cables enter the frame. Here is what they look on a bike if that helps: These specifically are ...
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2answers
297 views

What would you upgrade first on a road bike?

I have a Decathlon Triban RC500 with all stock components which I'm quite happy with. Since I have cash to burn (actually not, this question is hypothetical :)) what component should I upgrade first ...
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2answers
144 views

Is there any builder site for bicycle?

Say you want to build entirely your own bike, from frame to ring bell. Is there a site that can help you with compatibility among all parts? Or maybe you just want to upgrade your crank set but you ...
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4answers
2k views

Is it a good idea to buy second hand bike model that has been discontinued?

I am a new rider looking for a road bike. I found a deal to buy second hand 2017 Orbea Avant M40 size 51 for $800. I see that this model is discontinued by Orbea. Will it be a problem to find parts ...
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3answers
394 views

Two handlebars on bicycle

I have butterfly shaped handlebars on my hybrid bicycle. These were an aftermarket addition. These allow for different positions but I would like to add another set of handlebars with a wider ...
2
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3answers
187 views

What factors to take into account when choosing a hybrid bike?

I've decided I'd like to start commuting to work, but I'm not sure what factors I need to take into account when choosing a bike. I figured a hybrid bike suits my needs best, since I will be riding on ...
1
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1answer
347 views

Finding compatible fixed-gear cog and lockring

I have a flip-flop hub that came stock on a Trek single-speed. I'd like to install a fixed-gear cog and lockring opposite the existing freewheel. How can I determine which cogs and lockrings are ...
2
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1answer
418 views

Low-height rear rack for Bike Friday New World Tourist folding bike [closed]

I'm looking for a rear rack for my Bike Friday New World Tourist (20" wheels). I've come across a bunch of rear racks like this one that sit high above the wheel. But I'm searching for one that is not ...
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0answers
62 views

Small part for Shimano 105 brakes [closed]

My road bike has Shimano 105 brakes, circa 2003. Today, I removed the shoes from the front brakes, unscrewed the "fixing screws", and slid out the pads, so I can put in new pads. Somehow, for one of ...
4
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2answers
128 views

Help identify fender mounting clamp?

My bike has metal fenders that attach to the frame through ~3mm steel arms that are clamped and held in place with a piece of plastic that is screwed to the frame (M5 bolts) - as shown on the photo. ...
24
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1answer
4k views

Random piece of plastic

I have recently purchased a hybrid bike with suspension (not sure if that is relevant to this question). It came with two pieces of plastic. Any ideas what they may be for?
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6answers
3k views

Can a new chain significantly improve the riding experience? If yes - what else can?

I am a casual commuter (in average 2 days per week, 30 km per day), on a generic bike which I bought a few years ago. Yesterday I took the opportunity of having the bike reviewed and the chain and ...
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2answers
103 views

What are these parts and how to remove them without a tool

Are the two being symmetrical part circled in blue the following picture DU bushings ? How could I remove them without the appropriate tool ?
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3answers
13k views

What are some other places to buy MTB frames online? [closed]

I am looking for sites that sell bike frames online. i find many sites list all things (forks) but stop short with frames. The best places I have found are: http://www.chainreactioncycles.com/ and ...
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0answers
312 views

What are the axle nut sizes on the brompton?

What are the exact specifications of the nuts used on the various axles of the Brompton bicycle? Specifically, I have a 2016 M6R black, but I would appreciate it if you listed the specifications for ...
3
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2answers
263 views

How to find a replacement and replace a broken kickstand?

My bike came with a kickstand, but today after a ride I noticed part of it had fallen off somewhere, as shown in the picture below: It used to look like this: As I don't have the part of kickstand ...
2
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1answer
370 views

How do I choose a replacement wheel rim?

These are my current rims: Wheeltech TD26 by Alex Rims (can't find much info about these online). I need to replace the rear wheel as it is cracked (cracks on the rims around a few spokes) It's a ...
2
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1answer
1k views

Any compatible trigger shifters for el-cheapo TD ONE derailleur?

Bought a cheap RoadMaster MTB's as a first "grown up" bikes for my daughter. For the price (~$60 in a sale) they play nicely, but it shows the poor quality of the components. The biggest gripe is the ...
3
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1answer
350 views

How to find a model number that replaced an old Shimano part

Is there some listing of Shimano component model numbers that can help me find a currently-manufactured part that is equivalent to an old model number that is no longer being manufactured? In ...

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