Garage
Shop

See all parts that fit your 1981 Firebird

One Start by AST OS125

Parallel Model: Ultra Start 1270 -- 4-Button Remote Starter Unit

One Start by AST
Shop all One Start by AST
Product videos
highlight-star-icon

4-Button Remote Starter Unit • Automatic system learning capability • Advanced RF technology allows long range communication with up to 1200ft. • Programmable run time and door lock functions • Anti-grind protection • Starter kill function

Learn more about the os125

We apologize

This item has been discontinued


Loading...
Limited time!
46CSC654 main

Kicker CSC65 (46CSC654)

600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers

122
-33.36%

$79.96

List price $119.99

Limited time!
46CSC6934 main

Kicker CSC693 (46CSC6934)

900W Peak (300W RMS) 6x9” CS Series 3 Way Coaxial 4-ohm Speakers with Integrated Midrange Speakers

40
-30.02%

$111.96

List price $159.99

Club 322F main

JBL Club 322F (SPKCB322FAM)

150W Peak (50W RMS) 3.5" Club Series 2 Way Coaxial 3-ohm Speakers

1
-27.29%

$79.95

List price $109.95

Limited time!
Club 622 main

JBL Club 622

360W Peak (120W RMS) 6.5" Club Series 2-way Coaxial 3-ohm Speakers

5
-28.58%

$99.95

List price $139.95

43DSC6504 main

Kicker DSC650 (43DSC6504)

480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)

28
-10.53%

$84.99

List price $94.99

DB652 main

Polk Audio DB652 (DB 652)

600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

12
-9.16%

$109.00

List price $119.99

SXE-6926S main

Alpine SXE-6926S

280W Peak (90W RMS) 6x9” SXE Series 2-way 4-ohm Coaxial Speakers

13
-20.84%

$56.99

List price $71.99

MPK 163.3 main

Hertz MPK163.3

600W Peak (300W RMS) 6.5" Mille PRO Series 3-way 4-ohm Component Speaker System

2
-14.89%

$999.99

List price $1175.00

PNW-65CS2 main

AudioControl PNW-65CS2

250W Peak (200W RMS) 6.5″ PNW Series 2 Way Component 3-ohm Speakers

4
-5.90%

$319.00

List price $339.00

NSP65 main

NVX NSP65

540W Peak (180W RMS) 6.5" N-Series 2 Way Coaxial Car Speakers

93
-35.19%

$69.99

List price $107.99

Product Highlights


4-Button Remote Starter Unit • Automatic system learning capability • Advanced RF technology allows long range communication with up to 1200ft. • Programmable run time and door lock functions • Anti-grind protection • Starter kill function

Description


One Start by AST brand icon

Authorized dealer

General Features:

  • 4-Button Remote Starter Unit
  • Industrial rated components could withstand extreme climate conditions
  • Advanced RF technology allows long range communication with up to 1200ft.
  • User friendly with icons on buttons of remote and simple multi-function operation
  • For automatic transmission vehicles ONLY
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Functions and Features:

  • Ultra Tach detection system (Tach-less mode capable)
  • 5 Built-in relays
  • Safety shutdown
  • Alarm arm/disarm
  • Door lock/unlock
  • Horn honk
  • Starter disable output
  • Anti-grind
  • Safety start
  • Programmable diesel mode
  • Passive starter disable function
  • Programmable crank time
  • Programmable crank attempts
  • Automatic ignition locks
  • Panic feature
  • Keyless idle mode
  • System diagnostic memory

Best selling similar products

SP-302 small

Crimestopper SP-302

• 2-Way Paging Remote Car Starter
• 5-Button LCD Transmitter
• 3000 feet of range (0.56 miles)
• Full high speed 2-way data to data

(6)

$99.99

List price $199.95

5908V small

Viper 5908V

• 2-Way Remote Start, Keyless Entry and Car Alarm System
• Includes (1) 2-way LCD transmitter and (1) 1-way sidekick remote control transmitter
• 1 mile range
• Antenna with integrated valet switch and LED

$469.99

List price $529.99

OL-RS-CH5 small

Omega OL-RS-CH5

• Standalone Remote Start Solution System
• Optional add on RF kits available and smartphone compatibility
• Custom plug-and-play T-Harness included
• Control door lock and unlock, remote start and more using your Smartphone
• Compatible with select 2005-2018 vehicles from Dodge, Jeep, Chrysler

(23)

$93.99

List price $199.99

5108V small

Viper 5108V

• 1-Way Remote Start, Keyless Entry and Car Alarm System
• Includes (2) 4-button LED remote control transmitter
• 1/4 mile (1320 ft) range
• Antenna with integrated valet switch and LED

$209.99

List price $249.99

2103V small

Viper 2103V

• 1-Way Keyless Entry Car Alarm System
• 4-Button Transmitter
• 1/4 mile (1320 feet) range

$119.99

List price $139.99

AL-560 small

Excalibur AL-560 Keyless Entry Security System

• 1-Way Keyless Entry Car Alarm
• Two 4 Button Transmitters
• 500' Range
• Dual zone shock sensor included • Valet Mode
• Remote Panic Operation
• Starter Interrupt included

(1)

$59.99

List price $64.99

D9858V small

Viper D9858V

• 2-Way 5-Button Remote Start and Car Alarm LED Transmitters
• Includes (1) 2-way LED transmitter and (1) 1-way transmitter
• 1 mile range
• Compatible with Viper DS4 and DS4P security systems

$209.99

List price $249.99

No picture

Viper D9957VHD

• 2-Way 5-Button Remote Start LCD Transmitters
• Includes (1) 2-way 5-button LCD transmitter and (1) 1-way transmitter
• 3 miles / 15840 ft range
• Compatible with Viper DS4 and DS4P security systems

$399.99

List price $499.99

AL-1775-3DB small

Excalibur AL-1775-3DB

• 2-Way Keyless Entry Car Alarm with Remote Start Control
• 4-Button LED Transmitter with Digital Display
• Up to 3000 ft Range
• Multi-Vehicle Support

$119.99

List price $170.78

OL-RS-CH4 small

Omega OL-RS-CH4

• Standalone Remote Start Solution System
• Optional add on RF kits available and smartphone compatibility
• Custom plug-and-play T-Harness included
• Control door lock and unlock, remote start and more using your Smartphone
• Compatible with select 2008-2016 vehicles from Dodge, Ram, Chrysler

(21)

$149.99

List price $199.99

Specifications & Details


General Features
Remote Start
Yes
Keyless Entry
No
2-way Paging
No
Number of Remotes
2
Number of Buttons on Primary Remote
4
Convenient Features
Panic Mode
Yes
Trunk Release
No
Alarm Features
Paging Range
1,200 Feet
Siren
No
Shock Sensor
No
Two-Way Paging Features
Interior Thermometer
No
Remote Start Features
Cold Start Timer
No
Turbo Timer
No
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

OS125

Weight:

2.00lbs

Internal SKU:

os125

Internal Product ID:

11027

Product and How-to Videos


Customer Ratings & Reviews


One Start by AST OS125 thumbnail image

5 star
0%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
0
Value
0
Features
0
Design
0
Usability
0

Customer Reviews

Sort by:

Loading...
Sorry, no reviews found


P300X2 small

Rockford Fosgate Punch P300X2 OPEN BOX INCOMPLETE

300W RMS Punch Series 2-Channel Stereo Class AB Car Power Amplifier (P300X.2)

$111.99

List price $299.99

Related Searches


Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

1981 Pontiac Firebird

2016 Alfa Romeo 4C

2017 Hyundai Sonata

2005 Kia Rio Cinco

2013 Dodge Charger

2016 BMW 3 Series

2017 Audi S7

1994 Eagle Talon

1992 Geo Tracker

2025 Genesis G70

Vehicle
Store
Delete

2012 Harley Davidson FXDF Fat Bob

Vehicle
Store
Delete

2014 Can-Am Commander DPS 800R

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.