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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0answers
54 views

Small part for Shimano 105 brakes

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
76 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. ...
22
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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?
3
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2answers
122 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 ...
6
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1answer
284 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 ...
1
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1answer
160 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
100 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 ...
6
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6answers
2k 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 ...
1
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2answers
102 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 ?
2
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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
105 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
135 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
148 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
369 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
166 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 ...
1
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1answer
79 views

Can't tighten thru-axle

Long story short, my cone nut came off while riding. Can I put it back without dismantling my freehub? And why I can't tighten my axle anymore? Only way I can tighten axle is without wheel. As soon I ...
3
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3answers
467 views

Replacement stem cap and bolt

Our oldest son has been alternating between mine and my wife’s bike (Carreras from Halfords) whenever he has to go anywhere, but over the last week or so we noticed he had stopped using my bike, ...
5
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4answers
8k views

Who else makes H-bar Loop Handlebars?

Jones makes a great pair of touring handlebars with a loop for mounting lots of accessories, but their prices are a bit steep ($120-$425). I'm building a mountain touring bike and I've been trying to ...
36
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13answers
142k views

Why would one ever buy a 12-25 cassette when an 11-25 is available?

I was looking at purchasing a new cassette and chain. Looking at the available cassettes for SRAM components, there is a big variety of sizes available: 11-23: 11-12-13-14-15-16-17-19-21-23 11-25: 11-...
4
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1answer
27k views

Why does my non-drive side crank arm come loose?

I tighten the bolt super hard. Ride for a while. Then it comes loose again. I don't know if its my BB or the bolts. How can this be fixed??
6
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3answers
2k views

How to improve/restore vintage Peugeot bike, or is it even worth it?

I've got an old Peugeot bike I've been riding, and I like it but I'd like to make it better for long rides. I'd like to replace some parts, the steel rims aren't good for braking and I'd like ...
3
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1answer
1k views

Hydraulic Disc Brakes Not Locking Up

So as the title says my disc brakes are not locking up. They are gripping but not locking. My older brakes were leaking and i changed them with Shimano Deore BL-M596. I have searched online and found ...
34
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4answers
39k views

What is the difference between brake cables and derailleur cables?

What is the difference between brake cables and derailleur/shift cables? When I look online for replacement cables I see "brake cables" and "shift cables." From the images they all look the same. ...
9
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4answers
6k views

Is it a good idea to get a narrower front tire and a wider rear tire on a road bike?

I am currently running Continental Grand Prix S 4000 in 23-622 / 700x23C front and rear. I am about to buy a new set of tires for my road bike and am fancying a smaller tire for the front and a wider ...
4
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1answer
148 views

What is this part of a bicycle trailer called, and where can I find a replacement?

I have a Schwinn double bicycle trailer for my kids, but it is broken. The black plastic part pictured fits at the base of the right wall and connects it to the trailer frame. A bolt goes through the ...
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0answers
118 views

What are my options - TA to QR conversion

I’ve just bought these wheels on gumtree and didn’t realise they were thru axle as I require quick release for my cx bike (BH RX team cross 2014 https://issuu.com/bhbikesusa/docs/bh_bikes_2014-...
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2answers
175 views

Rusty brake nuts & cables: Should I change my brakes or not?

I have been using a used bike for a few months now and when I bought it it was in mint conditions. However, the winter has been really harsh were I live and since I drove every day to work with it ...
13
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4answers
6k views

How are these plastic rings used on my Shimano disk brake mount adapter?

I boughtt a Shimano SM-MA-R160 Disc Brake Mount Adaptor for my bike. It came with these black plastic things in the lower right corner of the photo below. I have a bunch and don't know what are they ...
2
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1answer
282 views

Is there a front derailer type that can be mounted on a frame without braze on or fitting on the seat tube, or clamping?

As the question says, is there a front derailer type that can be mounted without having a fitting or braze on on the seat tube, or without clamping to the seat tube (because it's a weird shape, or ...
3
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1answer
390 views

Are road bike shifter hoods compatible across models?

I've been using Shimano Sora Shifters since about 2012 .. probably one generation before the current (https://bike.shimano.com/en-EU/product/component/sora-3500/ST-3500.html) The rubber covers are ...
0
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1answer
2k views

Can I change chainring size on a dirt jump bike?

I don't know the name of it but there is a part on single speed bikes. The gear? I think right where the crank is connected. Well on bmx bikes and especially dirt jumping bikes it is really small and ...
2
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0answers
146 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 ...
3
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3answers
7k views

How do I identify an SR SunTour fork exact model?

I recently located this SR SunTour service manual, containing schematics of a load of forks. Trouble is, my fork only has "XCR" on a sticker, and production date stamped. At some forum this is ...
4
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1answer
5k views

Is it possible to run standard mechanical shifting on a Scott Foil Premium frame?

The Scott Foil Premium is the highest end frame available from Scott Sports, and it is designed to run an electronic drive train, routed internally. The original reports were that this frame would be ...
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2answers
55 views

Can a cyclometer be used with any bicycle?

I just want to know if a cyclometer can be used on any cycle or just on those made for racing or touring. Thanks for your answer in advance.
7
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2answers
3k 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 ...
0
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0answers
656 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 ...
2
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3answers
372 views

New 2012's Sora 3500 vs used 2003's 105 5501

I am preparing my bike for a 2000 km trip. I have an old and used ~2003 hybrid bike with 105 derailleurs and want to change the current horizontal handlebars to road ones, so I have to change cables ...
3
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1answer
299 views

Ordering correct spoke nipple size

I've got some spoke nipples on a rear wheel which are stripped, and I'd like to replace them. I've measured the thickness of the spokes and they have a diameter of 2mm, which correspond to 14-gauge ...
5
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4answers
3k views

Where can I buy a wide range of used bike parts online?

Does anyone know of a reputable website that sells a wide range of used and second hand bike parts and components? I'm helping a friend rebuild an older commuter bike and we are having trouble ...
0
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4answers
482 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 ...
0
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1answer
179 views

What is an equivalent or compatible chainring for this Deore XT “24-AM” chainring?

I have a 2012 Mountain Bike with Deore XT. While troubleshooting chain suck on my inner chainring, I figured I'd order a new chainring and replace it. The chainring only has "24-AM" on it. However, ...
8
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3answers
14k views

Can a 10-speed mountain bike chain be used on a 10-speed road bike?

I would like to use a Shimano Deore XT Chain CN-HG94 on my road bike. Are there any differences between roadbike chains versus mountain bike chains that prohibit this? Sample Road Bike Chains: Dura ...
3
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2answers
201 views

Correct spring for 2018 RockShox XC30

I just got a new Cannondale Trail a few weeks ago (March 2018) and it came with RockShox XC30 100mm travel 29" wheel front fork. I'm heavier than the average rider so I need the XFirm spring for it. ...
3
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2answers
344 views

What type of rear derailleur is used on my bike?

Direct mount or hanger mount? Sooo, one glance at these photos will tell you why I'm asking this... Needles to say, I need a new one and I'd like to know what I should be looking for. It's for a 21-...
0
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3answers
204 views

I'm looking for a part that connects the saddle to the body frame of the bicycle

I recently removed the saddle because it was squeaking a lot, then I cleaned the inside and put oil back in, however I couldn't re-attach the bar under the seat to the body frame, then I used this ...
3
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1answer
127 views

What is this crank part called?

I recently had a Shun SS-8001 crankset fail. When taking it apart, I saw that the right pedal has a sort of stop ring that prevents the pedal, presumably, from unscrewing itself: Now I need to find a ...
2
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1answer
255 views

How do I figure out what crankset replacement will fit my derailleur?

I have a bike with a Shimano FC-M560 crankset in the front which I want to replace. I naively bought a Shimano FC-TY301 crankset, thinking that there's norms and that 3-speed cranksets are more or ...
3
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1answer
136 views

How can I un-seize track nuts?

I bought a set of these about 18 months ago now and for a little while they continued to work as they should but then now they're seized up. Is there anything (short of ordering another pair) I can ...
1
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1answer
37 views

Is it possible to replace this quick release part on a Motiv Rockpoint?

My son has been using this bike, and the other day he came home with a bolt that had come off. I checked it out, and it looks like there's also another part missing—the other end of the quick wheel ...