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Home » Products » Bachmann » Class 121 Single-Car DMU BR Network SouthEast (Revised)
Class 121 Single-Car DMU BR Network SouthEast (Revised)

RRP £274.94
Our Price

The Branchline model is equipped with a low profile, underfloor driveline that permits reproduction of an unprecedented level of interior detail, with no intrusion from the motor. Coupled with this impressive technical specification is a wealth of detail incorporated into the bodywork and chassis, plus the usual high standard of livery application associated with Bachmann products.


F0 - Directional Lights - On/Off
F1 - Warm Engine Start-up / Shut-down (with F5 On - Cold Engine Start-up)
F2 - Brake
F3 - Single Horn (Speed&Direction Dependent)
F4 – Two-Tone Horn (Speed&Direction Dependent)
F5 - Cold Start (engage F5 before F1) / Light Load
F6 - Engine Cruise / Compressor Speed-up
F7 - Flange Squeal (at Speed Steps 1-39 of 127
F8 - Detonators (Speed Variable)
F9 - Saloon Lighting - On/Off
F10 - Guard’s Whistle
F11 - Crawler Mode (Low speed&sounds only)
F12 - On - Guard’s Single Buzzer / Off - Driver’s Single Buzzer Response
F13 - On - Guard’s Double Buzzer / Off - Driver’s Double Buzzer Response
F14 - On - Driver’s Door Open / Off - Driver’s Door Closed
F15 - Passenger Door Slam (Before moving)
F16 – Non-Exhaust End Destination Blind Light - On/Off
F17 – Exhaust End Destination Blind Light - On/Off
F18 - Fade All Sounds
F19 - Windscreen Wipers
F20 – Non-Exhaust End Directional Lights - Off/On
F21 – Exhaust End Directional Lights - Off/On
F22 - Rail Join Clatter - Off/On (Speed Variable)
F23 - On - Passenger Door Open / Off - Passenger Door Closed
F24 - Cab Lights - On/Off
F25 - Handbrake
F26 - Air Tank Drain Down
F27 - Volume Down
F28 - Volume Up

Analogue Users: Please note that normal load running sounds and any other automatic or randomised sounds will also operate when this model is used on analogue control (DC) straight from the box!


Thought to be the UK’s longest serving first generation Diesel Multiple Unit (DMU), the Class 121s were first introduced in 1960. Nicknamed ‘Bubble Cars’, a total of 16 Class 121 Driving Motor Brake Second (DMBS) units were built by the Pressed Steel Company between 1960 and 1961 following the same basic design of the Class 117, featuring the standard ‘Derby’ cab and high-density seating. They were similar to the Class 122 DMUs but were distinguished by the presence of the four character headcode box above the cab. The single car units had a cab at each end, plus a guard’s area and seating for 65 passengers. Where additional capacity was required the Class 121s could be coupled with other DMUs that had blue square multiple working equipment.
Delivered to the Western Region, the units were intended for use on branch lines in Cornwall and the Thames Valley. The Class later spread further across the Western Region, whilst also moving to other areas in due course, with several examples ending up with Network SouthEast following Sectorisation. Many of the Class were later repurposed for Departmental work although three remained in passenger service with Silverlink following Privatisation. Chiltern Railways were the final operator of the Class 121s, using two for services between Aylesbury and Princes Risborough, the final unit was withdrawn in 2017. A significant number of the Class survive in preservation.

Accessory Pack
Cab Light
DCC Sound
Destination Blinds - Greenford & Paddington
Directional Lighting
Era - 8
Gauge - 00
Illuminated Destination Blinds
Interior Lighting
Length - 276mm (over Couplings)
Livery - Network SouthEast Revised
NEM Couplings
Running Number - 55024
Set Number - L124
Sprung Buffers

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