Opus BIG CITY 2021
2021 Urban
Estimate price |
687$
Weight | 11.88 kg 
Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 650b -
Groupset Altus, Shimano -
Suspension Rigid -
Drivetrain 3 × 9 -
Brakes Hydraulic Disc
Sizing
Recommended size guide.
XS
156cm - 166cm
SM
163cm - 174cm
MD
171cm - 182cm
LG
179cm - 189cm
XL
185cm - 195cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Meta 20 aluminum
Suspension Fork
Aluminum tapered 1-1/4 to 1-1/8 in
Drivetrain
Rear Derailleur
Shimano Altus
Front Derailleur
Shimano Altus
Shift Levers
Shimano ST-EF505 3x9
Cassette
Shimano 11-28
Crank
Shimano FC-MT101
Bottom Bracket
Shimano sealed cartridge
Chain
KMC-Z9
Pedals
FPD NW-247
Wheels
Front Hub
Joytech
Rear Hub
Joytech
Rims
Weinmann U28 650
Tires
Kenda Kwick Seven.5 650 x 45
Brakes
Brakes
Shimano BR-MT200 hydraulic disc
Brake Levers
Shimano
Cockpit
Stem
Promax
Handlebar
Alloy 12 mm rise
Headset
FSA Orbit integrated sealed
Seat
Saddle
Opus City
Seatpost
Promax alloy 27.2 x 300
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | XS | SM | MD | LG | XL |
|---|---|---|---|---|---|
| Stack Reach Ratio | 1.5 mm | 1.5 mm | 1.5 mm | 1.5 mm | 1.5 mm |
| Stack | 557 mm | 572 mm | 587 mm | 602 mm | 617 mm |
| Reach | 372 mm | 382 mm | 392 mm | 402 mm | 412 mm |
| Top Tube Length | 527 mm | 547 mm | 567 mm | 587 mm | 607 mm |
| Seat Tube Angle | 74.5 ° | 74 ° | 73.5 ° | 73 ° | 72.5 ° |
| Seat Tube Length | 380 mm | 420 mm | 460 mm | 500 mm | 540 mm |
| Head Tube Angle | 71 ° | 71.25 ° | 71.5 ° | 71.75 ° | 72 ° |
| Head Tube Length | 148 mm | 163 mm | 183 mm | 198 mm | 213 mm |
| Chainstay Length | 437 mm | 442 mm | 442 mm | 442 mm | 447 mm |
| Bottom Bracket Drop | 65 mm | 65 mm | 60 mm | 60 mm | 60 mm |
| Standover Height | 723 mm | 749 mm | 780 mm | 805 mm | 831 mm |
| Wheels | 650 | 650 | 650 | 650 | 650 |
| Rider Min Height | 156 cm | 163 cm | 171 cm | 179 cm | 185 cm |
| Rider Max Height | 166 cm | 174 cm | 182 cm | 189 cm | 195 cm |
Model Overview
BIG CITY belongs to the Opus Big City model. There are 9 bikes that carry this model name. Take a sneak peek at all Opus Big City bikes models from 2021, by clicking here.
Model range prices
Opus BIG CITY 2 2021 is the most economical model, with a starting price of 614$. Opus BIG CITY LRT 2021 on the other hand costs 759$, and is the most expensive model.
Safety
Take safety seriously when you ride your bike, and always wear your helmet. Moreover, don’t ride on the sidewalk. This is actually against the law in some states and can be dangerous for both you and pedestrians.
Average price for Commuter bikes
According to our math, the average price for a trustworthy Commuter bike is 762$. However, paying less money than this amount doesn’t mean that you couldn’t get a great Commuter bike. To make sure you don’t pay a higher amount than normal for your bike, always do some components analysis and read reviews.
Furthermore, this bike was made available in 2021 for 686$. Doing a quick comparison, we notice that BIG CITY price is 11.08% smaller than the average cost of a Commuter bike.
Average weight for Commuter bikes
On a deeper look, we notice that the average weight of a Commuter bike is 14.29 kg (31.5 lbs). It is a good advantage to have a lighter bike than the average. However, a heavier bike is more efficient on descents.
Weighing 11.88 kg (26.19 lbs), the BIG CITY model is much lighter than average. To sum up, it’s 20.29% lighter than the average weight of Commuter bikes.
Overview of components
Fork material
When it comes to the fork, this bike has an aluminum one, so there won’t be much extra weight added to the bike. However, they are not so stiff as carbon forks are.
Wheels size
When leaving the production line, the BIG CITY model has aluminum wheels. After 700c wheels, 650b is the second most popular choice for road bikes. However, if you want higher speeds, you should look for a bike with 700c wheels.
Brakes
For your safety, it is important to have quality breaks on your bike. Opus BIG CITY has Hydraulic Disc brakes installed. These kinds of brakes are among the most popular models used on bikes. To sum up, your safety is in good hands.
Sizes
Opus BIG CITY bike has 5 sizes, in the range of 156 cm – 195 cm (5.12 ft – 6.4 ft). In conclusion, it won’t take much to find one that’s right for you.