I got tired of pointing and saying 這個 at bike shops, so I put this together. I thought it might come in handy for some of you. Feel free to update or add to it.
[col]English
Bike
Road bike
Mountain bike
Cyclocross bike
Touring bike
Folding bike
Frame
Frame size
Weight
Frame material
Carbon
Aluminum
Steel
Titanium
Speeds/gears
Shifters
Front derailleur
Rear derailleur
Short cage
Long cage
Derailleur cable
Crankset
Bottom bracket
Cassette
Chain
Master link (chain)
Pedals
Handlebar
Drop bars
Flat bars
Riser bars
Grips
Bar ends
Bar tape
Bar plugs
Stem
Headset
Top cap
Star nut
Compression nut
Headset spacers or
Headset spacers
Fork
Suspension fork
Steerer tube
Seatpost
Saddle
Brake calipers
Brake levers
Brake hoods
Brake pads
Brake cable
Stainless steel
Cable ends
Cable housing (brake/derailleur)
Hydraulic brakes
Hydraulic brake hose
Disc rotors
Front wheel
Rear wheel
Wheelset
Front hub
Rear hub
Rim
Rim tape
Spokes
Spoke nipples
Quick release
Tires
Inner tube
Bolt
Sealed bearings
Grease
Water bottle
Bottle cage
Helmet|Chinese | Pinyin
自行車, 單車, 腳踏車 | zì xíngchē, dān chē, jiǎo tà chē
公路車 | gōng lù chē
登山車 | dēng shān chē
越野車 | yuè yě chē
旅行車 | lǚ xíng chē
折疊車 | zhé dié chē
車架 | chē jià
車架尺寸 | chē jià chǐ cùn
車重 | chē zhòng
車架材質 | chē jià cái zhì
碳纖維 | tàn xiān wéi
鋁合金 | lǚ hé jīn
鋼管 | gāng guǎn
鈦合金 | tài hé jīn
速別 | sù bié
變速把手 | biàn sù bǎ shǒu
前變速器 | qián biàn sù qì
後變速器 | hòu biàn sù qì
短腿 | duǎn tuǐ
長腿 | cháng tuǐ
變速線 | biàn sù xiàn
大齒盤 | dà chǐ pán
BB | n/a
飛輪 | fēi lún
鍊條 | liàn tiáo
速鏈條快扣 | sù liàn tiáo kuài kòu
踏板 | tà bǎn
手把 | shǒu bà
小彎把 | xiǎo wān bǎ
直把 | zhí bǎ
燕把 | yàn bǎ
握把 | wò bǎ
牛角 | niú jiǎo
手把帶 | shǒu bà dài
手把尾塞 | shǒu bà wěi sāi
立管, 龍頭, 把立 | lì guǎn, lóng tóu, bǎ lì
車頭碗 | chē tóu wǎn
(車頭碗) 上蓋, 把立蓋 | shàng gài, bǎ lì gài
螺母, 梅花 | luó mǔ, méi huā
前叉迫緊器 | qián chā pò jǐn qì,
免打梅花 | miǎn dǎ méi huā
龍頭墊圈 | lóng tóu diàn quān
前叉 | qián chā
避震前叉 | bì zhèn qián chā
豎管 | shù guǎn
座管 | zuò guǎn
座墊 | zuò diàn
剎車夾器 | shā chē jiā qì
剎車把手 | shā chē bǎ shǒu
剎變把套 | shā biàn bǎ tào
剎車皮 | shā chē pí
剎車線 | shā chē xiàn
不鏽鋼 | bù xiù gāng
線尾套 | xiàn wěi tào
(剎車/變速) 線外管 | (shā chē/ biàn sù) xiàn wài guǎn
油壓碟煞 | yóu yā dié shā
油管 | yóu guǎn
碟盤 | dié pán`
前輪 | qián lún
後輪 | hòu lún
輪組 | lún zǔ
前花鼓 | qián huā gǔ
後花鼓 | hòu huā gǔ
輪圈 | lún quān
襯帶, 內襯 | chèn dài, nèi chèn
鋼絲 | gāng sī
鋼頭 | gāng tóu
快拆 | kuài chāi
輪胎 | lún tāi
內胎 | nèi tāi
螺絲 | luó sī
培林 | péi lín
潤滑油 | rùn huá yóu
水壺 | shuǐ hú
水壺架 | shuǐ hú jià
安全帽 | ān quán mào[/col]