Carrera subway 1 derailleur question

[Kevindwild]

Hi
I have a subway 1 in need of a bit of love . The rear derailleur arm broke about a year ago and I did a quick fix by slapping on an old derailleur I found in the garage. It's not fantastic so I'd like to fix it properly. But I seem to have lost all the original bits. Anyone know what Shimano set was original on the subway or a reasonably priced alternative
Thanks
Kev

 

[theloafer]

this the one http://www.bikeradar.com/gear/categ...rrera-subway-1-8831#manufacturers_description

Specification
Name:
Subway 1
Built by:
Carrera
Price:
£200.00

Available Sizes:
14 Inches, 16 Inches, 18 Inches, 20 Inches, 22 Inches, 24Inches
Weight (kg):
12.7

Frame & Fork:
Frame Material:
Aluminium
Fork Brand:
Cromoly

Brakes:
Brakes Brand:
Shimano

Transmission:
Cranks Brand:
SR Suntour
Rear Derailleur Brand:
SRAM
Rear Derailleur Model:
SX4
Front Derailleur Brand:
Shimano
Front Derailleur Model:
Shimano C050
Shifters Brand:
SRAM
Chain Brand:
SRAM

Wheels:
Tyres Brand:
Continental

Contact Points:
Saddle Brand:
Carrera
Handlebar Model:
OS Low Riser

:
Chainrings Brand:
Shimano
Seat Tube Angle:
73 Degrees
Colour:
Grey
Head Tube Angle:
71 Degrees
Frame Type:
Suspension
Weight (g):
12700 g
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