Home / Shop / Aldan American TrueLine Shocks 300121 Shocks/Struts, TrueLine, Twin-tube, Gas-charged, Front/Rear, Lowered, Chevy, GMC, Set of 4

Aldan American TrueLine Shocks 300121 Shocks/Struts, TrueLine, Twin-tube, Gas-charged, Front/Rear, Lowered, Chevy, GMC, Set of 4

SKU: AAX300121

Shocks and Struts

Aldan American

Aldan American TrueLine Shocks 300121 Shocks/Struts, TrueLine, Twin-tube, Gas-charged, Front/Rear, Lowered, Chevy, GMC, Set of 4

SKU: AAX300121

Shocks and Struts

Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

We accept

Description

Aldan American TrueLine shocks are designed to work with factory or aftermarket control arms, air bag shock replacements, and rear-end shock absorber setups. Available in a variety of lengths with polyurethane or spherical bearing mounts for stock or lowered car and truck applications, TrueLine shocks feature 2 in. bodies machined from 6061 T-6 billet aluminum—providing a lightweight, high-strength solution for reducing unsprung weight. They use factory shock mounting locations for an OEM-quality fit, and they offer single shock adjustment for fine shock tuning and a smoother, more consistent ride. The shocks are also fully rebuildable and serviceable for a lifetime of use. Gain improved handling and better ride-quality with Aldan American TrueLine rear shocks.

Part Type

Shocks and Struts

Data: v4.2 - Upd: 2026-10-16 13:05:14

Specifications

Product Attributes - Brand: Aldan American
Product Attributes - Manufacturer's Part Number: 300121
Product Attributes - Part Type: Shocks and Struts
Product Attributes - Product Line: Aldan American TrueLine Shocks
Product Attributes - UPC: 680599202506
Product Attributes - Ride Height: Lowered
Product Attributes - Ride Height Note: Additional ride height information may be available for your vehicle, please refer to the app tab.
Product Attributes - Lowered Amount Range (in.): 2.00 in.
Product Attributes - Internal Design: Twin-tube
Product Attributes - Adjustable Valving: Yes
Product Attributes - Gas Charged: Yes
Product Attributes - Upper Mount: Eyelet
Product Attributes - Lower Mount: Eyelet
Product Attributes - Bushing Material: Polyurethane
Product Attributes - Bushing Color: Black
Product Attributes - Boot Included: No
Product Attributes - Body Diameter (in.): 2.000
Product Attributes - Remanufactured: No
Product Attributes - Quantity: Sold as a set of 4.

Reference Information

Brand Name/s	Aldan American
StreetFX SKU	aax300121
SFX Item ID	5196326
Supplier Item Code	5196326
Manufacturer SKU	300121
Manufacturer UPC	680599202506

Compatibility

Application Data

Make	CHEVROLET
Model	C10
Submodel	BIG TEN
Beginning Year	1978
Ending Year	1979
Engine Type	V8
Liter	5.0
CID	305
Engine Size	5.0L/305
Engine Family	Chevy small block Gen I
Drivetrain	RWD
Shock Position	Front
Body Style	Standard Cab Pickup
Application Notes	Shock Kit, TruLine, 63-87 GM, Front and Rear, Lowered, Leaf, Single Adj., Kit; United States (USA)
Engine VIN Code	U
Region	USA

Make	CHEVROLET
Model	C10
Submodel	BIG TEN
Beginning Year	1978
Ending Year	1979
Engine Type	V8
Liter	5.0
CID	305
Engine Size	5.0L/305
Engine Family	Chevy small block Gen I
Drivetrain	RWD
Shock Position	Rear
Body Style	Standard Cab Pickup
Application Notes	RWD; United States (USA)
Engine VIN Code	U
Region	USA

Make	CHEVROLET
Model	C10
Submodel	BIG TEN
Beginning Year	1978
Ending Year	1979
Engine Type	V8
Liter	5.7
CID	350
Engine Size	5.7L/350
Engine Family	OLDSMOBILE V8 DIESEL
Drivetrain	RWD
Shock Position	Front
Body Style	Standard Cab Pickup
Application Notes	Shock Kit, TruLine, 63-87 GM, Front and Rear, Lowered, Leaf, Single Adj., Kit; United States (USA)
Engine VIN Code	Z
Region	USA

Make	CHEVROLET
Model	C10
Submodel	BIG TEN
Beginning Year	1978
Ending Year	1979
Engine Type	V8
Liter	5.7
CID	350
Engine Size	5.7L/350
Engine Family	OLDSMOBILE V8 DIESEL
Drivetrain	RWD
Shock Position	Rear
Body Style	Standard Cab Pickup
Application Notes	RWD; United States (USA)
Engine VIN Code	Z
Region	USA

Make	CHEVROLET
Model	C10
Submodel	BIG TEN
Beginning Year	1978
Ending Year	1979
Engine Type	V8
Liter	7.4
CID	454
Engine Size	7.4L/454
Engine Family	Chevy big block Mark IV
Drivetrain	RWD
Shock Position	Front
Body Style	Standard Cab Pickup
Application Notes	Shock Kit, TruLine, 63-87 GM, Front and Rear, Lowered, Leaf, Single Adj., Kit; United States (USA)
Engine VIN Code	S
Region	USA

Make	CHEVROLET
Model	C10
Submodel	BIG TEN
Beginning Year	1978
Ending Year	1979
Engine Type	V8
Liter	7.4
CID	454
Engine Size	7.4L/454
Engine Family	Chevy big block Mark IV
Drivetrain	RWD
Shock Position	Rear
Body Style	Standard Cab Pickup
Application Notes	RWD; United States (USA)
Engine VIN Code	S
Region	USA

Make	CHEVROLET
Model	C10
Submodel	BIG TEN
Beginning Year	1978
Ending Year	1980
Engine Type	L6
Liter	4.1
CID	250
Engine Size	4.1L/250
Engine Family	CHEVROLET L6 GAS
Drivetrain	RWD
Shock Position	Front
Body Style	Standard Cab Pickup
Application Notes	Shock Kit, TruLine, 63-87 GM, Front and Rear, Lowered, Leaf, Single Adj., Kit; United States (USA)
Engine VIN Code	D
Region	USA

Make	CHEVROLET
Model	C10
Submodel	BIG TEN
Beginning Year	1978
Ending Year	1980
Engine Type	L6
Liter	4.1
CID	250
Engine Size	4.1L/250
Engine Family	CHEVROLET L6 GAS
Drivetrain	RWD
Shock Position	Rear
Body Style	Standard Cab Pickup
Application Notes	RWD; United States (USA)
Engine VIN Code	D
Region	USA

Make	CHEVROLET
Model	C10
Submodel	BIG TEN
Beginning Year	1978
Ending Year	1980
Engine Type	L6
Liter	4.8
CID	292
Engine Size	4.8L/292
Engine Family	CHEVROLET L6 GAS
Drivetrain	RWD
Shock Position	Front
Body Style	Standard Cab Pickup
Application Notes	Shock Kit, TruLine, 63-87 GM, Front and Rear, Lowered, Leaf, Single Adj., Kit; United States (USA)
Engine VIN Code	T
Region	USA

Make	CHEVROLET
Model	C10
Submodel	BIG TEN
Beginning Year	1978
Ending Year	1980
Engine Type	L6
Liter	4.8
CID	292
Engine Size	4.8L/292
Engine Family	CHEVROLET L6 GAS
Drivetrain	RWD
Shock Position	Rear
Body Style	Standard Cab Pickup
Application Notes	Shock Kit, TruLine, 63-87 GM, Front and Rear, Lowered, Leaf, Single Adj., Kit; United States (USA)
Engine VIN Code	T
Region	USA

Make	CHEVROLET
Model	C10
Submodel	BIG TEN
Beginning Year	1978
Ending Year	1980
Engine Type	V8
Liter	5.7
CID	350
Engine Size	5.7L/350
Engine Family	Chevy small block Gen I
Drivetrain	RWD
Shock Position	Front
Body Style	Standard Cab Pickup
Application Notes	Shock Kit, TruLine, 63-87 GM, Front and Rear, Lowered, Leaf, Single Adj., Kit; United States (USA)
Engine VIN Code	L
Region	USA

Make	CHEVROLET
Model	C10
Submodel	BIG TEN
Beginning Year	1978
Ending Year	1980
Engine Type	V8
Liter	5.7
CID	350
Engine Size	5.7L/350
Engine Family	Chevy small block Gen I
Drivetrain	RWD
Shock Position	Rear
Body Style	Standard Cab Pickup
Application Notes	RWD; United States (USA)
Engine VIN Code	L
Region	USA

Make	CHEVROLET
Model	C10
Submodel	BIG TEN
Beginning Year	1980
Ending Year	1980
Engine Type	V8
Liter	5.0
CID	305
Engine Size	5.0L/305
Engine Family	Chevy small block Gen I
Drivetrain	RWD
Shock Position	Front
Body Style	Standard Cab Pickup
Application Notes	RWD; United States (USA)
Engine VIN Code	G
Region	USA

Make	CHEVROLET
Model	C10
Submodel	BIG TEN
Beginning Year	1980
Ending Year	1980
Engine Type	V8
Liter	5.0
CID	305
Engine Size	5.0L/305
Engine Family	Chevy small block Gen I
Drivetrain	RWD
Shock Position	Rear
Body Style	Standard Cab Pickup
Application Notes	Shock Kit, TruLine, 63-87 GM, Front and Rear, Lowered, Leaf, Single Adj., Kit; United States (USA)
Engine VIN Code	G
Region	USA

Make	CHEVROLET
Model	C10
Submodel	BIG TEN
Beginning Year	1980
Ending Year	1980
Engine Type	V8
Liter	5.7
CID	350
Engine Size	5.7L/350
Engine Family	Chevy small block Gen I
Drivetrain	RWD
Shock Position	Front
Body Style	Standard Cab Pickup
Application Notes	RWD; United States (USA)
Engine VIN Code	M
Region	USA

Make	CHEVROLET
Model	C10
Submodel	BIG TEN
Beginning Year	1980
Ending Year	1980
Engine Type	V8
Liter	5.7
CID	350
Engine Size	5.7L/350
Engine Family	Chevy small block Gen I
Drivetrain	RWD
Shock Position	Rear
Body Style	Standard Cab Pickup
Application Notes	Shock Kit, TruLine, 63-87 GM, Front and Rear, Lowered, Leaf, Single Adj., Kit; United States (USA)
Engine VIN Code	M
Region	USA

Make	CHEVROLET
Model	C10
Submodel	BIG TEN
Beginning Year	1980
Ending Year	1980
Engine Type	V8
Liter	6.6
CID	400
Engine Size	6.6L/400
Engine Family	Chevy small block Gen I
Drivetrain	RWD
Shock Position	Front
Body Style	Standard Cab Pickup
Application Notes	RWD; United States (USA)
Engine VIN Code	X
Region	USA

Make	CHEVROLET
Model	C10
Submodel	BIG TEN
Beginning Year	1980
Ending Year	1980
Engine Type	V8
Liter	6.6
CID	400
Engine Size	6.6L/400
Engine Family	Chevy small block Gen I
Drivetrain	RWD
Shock Position	Rear
Body Style	Standard Cab Pickup
Application Notes	Shock Kit, TruLine, 63-87 GM, Front and Rear, Lowered, Leaf, Single Adj., Kit; United States (USA)
Engine VIN Code	X
Region	USA

Make	CHEVROLET
Model	C10
Submodel	BIG TEN
Beginning Year	1980
Ending Year	1980
Engine Type	V8
Liter	7.4
CID	454
Engine Size	7.4L/454
Engine Family	Chevy big block Mark IV
Drivetrain	RWD
Shock Position	Front
Body Style	Standard Cab Pickup
Application Notes	RWD; United States (USA)
Engine VIN Code	W
Region	USA

Make	CHEVROLET
Model	C10
Submodel	BIG TEN
Beginning Year	1980
Ending Year	1980
Engine Type	V8
Liter	7.4
CID	454
Engine Size	7.4L/454
Engine Family	Chevy big block Mark IV
Drivetrain	RWD
Shock Position	Rear
Body Style	Standard Cab Pickup
Application Notes	Shock Kit, TruLine, 63-87 GM, Front and Rear, Lowered, Leaf, Single Adj., Kit; United States (USA)
Engine VIN Code	W
Region	USA

Make	CHEVROLET
Model	C10
Submodel	CHEYENNE
Beginning Year	1975
Ending Year	1975
Engine Type	L6
Liter	4.1
CID	250
Engine Size	4.1L/250
Engine Family	CHEVROLET L6 GAS
Drivetrain	RWD
Shock Position	Front
Body Style	Cab & Chassis
Application Notes	RWD; United States (USA)
Engine VIN Code	Q
Region	USA

Make	CHEVROLET
Model	C10
Submodel	CHEYENNE
Beginning Year	1975
Ending Year	1975
Engine Type	L6
Liter	4.1
CID	250
Engine Size	4.1L/250
Engine Family	CHEVROLET L6 GAS
Drivetrain	RWD
Shock Position	Front
Body Style	Standard Cab Pickup
Application Notes	RWD; United States (USA)
Engine VIN Code	Q
Region	USA

Make	CHEVROLET
Model	C10
Submodel	CHEYENNE
Beginning Year	1975
Ending Year	1975
Engine Type	L6
Liter	4.1
CID	250
Engine Size	4.1L/250
Engine Family	CHEVROLET L6 GAS
Drivetrain	RWD
Shock Position	Rear
Body Style	Cab & Chassis
Application Notes	RWD; United States (USA)
Engine VIN Code	Q
Region	USA

Make	CHEVROLET
Model	C10
Submodel	CHEYENNE
Beginning Year	1975
Ending Year	1975
Engine Type	L6
Liter	4.1
CID	250
Engine Size	4.1L/250
Engine Family	CHEVROLET L6 GAS
Drivetrain	RWD
Shock Position	Rear
Body Style	Standard Cab Pickup
Application Notes	RWD; United States (USA)
Engine VIN Code	Q
Region	USA

Make	CHEVROLET
Model	C10
Submodel	CHEYENNE
Beginning Year	1975
Ending Year	1975
Engine Type	V8
Liter	5.7
CID	350
Engine Size	5.7L/350
Engine Family	Chevy small block Gen I
Drivetrain	RWD
Shock Position	Front
Body Style	Cab & Chassis
Application Notes	RWD; United States (USA)
Engine VIN Code	Y
Region	USA

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Aldan American TrueLine Shocks 300121 Shocks/Struts, TrueLine, Twin-tube, Gas-charged, Front/Rear, Lowered, Chevy, GMC, Set of 4

Aldan American TrueLine Shocks 300121 Shocks/Struts, TrueLine, Twin-tube, Gas-charged, Front/Rear, Lowered, Chevy, GMC, Set of 4

Description

Part Type

Specifications

Reference Information

Compatibility

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