Light Duty Suspension Products June 2015

Heavy Duty Helper Springs

Chevrolet / GMC

Heavy Duty Helper Kits are designed to add up to 4200 lbs.* of additional load handling capability without affecting ride quality when unloaded. High strength, cast iron, adjustable brackets allow for custom tuning the helper system to your load handling requirements. All Heavy Duty Helper Kits have been designed to be a bolt-on product with no welding or drilling required. Manufactured by Dayton Parts in the USA of the highest quality American steel for superior durability.

Heavy Duty Helper Spring How to Order: Order 1 Master Kit which includes all necessary springs, brackets and U-bolts for the application listed. Note: Components have been listed separate from those master kits that cannot ship UPS.

* Never exceed the manufacturer’s suggested GVW.

• Bolt on installation, no welding or drilling required. • High strength cast iron brackets used throughout. • Long life insulator pads virtually eliminate noise.

• Does not affect ride quality when vehicle is unloaded. • Adjustable brackets allow for "custom tuning" the helper system. • Manufactured by Dayton Parts from American made materials and components. • Does not depend on the original suspension to control additional

• Applications for most domestic trucks, vans and

utility vehicles.

vehicle loading.

Heavy Duty Helper Springs Chevrolet / GMC ¹⁄₂ Ton Front 4-Wheel Drive Truck

Master Kit Includes:

Kit Type

Spring Width

Master Kit No. 510-402 510-384

Leaf Kit No.

Bracket Kit No.

U-Bolt Kit No.

Model

*Year Capty.

Remarks

Blazer, Jimmy, Suburban Blazer, Jimmy, Suburban, K10/1500 pickup

1973-91 1000 6 2 ³⁄₄ 1967-72 800 6 2 ¹⁄₂

— — — Tapered extra leaf kit

— — — Tapered extra leaf kit, use w/taper leaf front springs w/ std. eyes only.

510-402

K10/1500, V10/1500 ¹⁄₂ Ton Rear 2-Wheel Drive Truck

1973-87 1000 6 2 ³⁄₄

— — — Tapered extra leaf kit

Master Kit Includes:

Kit Type

Spring Width

Master Kit No.

Leaf Kit No.

Bracket Kit No.

U-Bolt Kit No.

Model

*Year Capty.

Remarks

510-127

C1500 except short bed w/extended cab

1988-98 2600 1 2 ¹⁄₂

504-127 503-3119 502-215 H14

510-133 510-205

C1500 short bed w/extended cab 1988-98 2600 1 2 ¹⁄₂

504-133 503-3119 502-215 H14 504-205 503-2101 502-254 H12

C10/1500, R10/1500 Silverado/Sierra 1500

1985-87 2600 1 2 ¹⁄₂

N/A

1999-07

— — —

— — — No heavy duty kit available. See the Standard Duty section in this publication. — — — No heavy duty kit available. See the Standard Duty section in this publication.

N/A

Silverado/Sierra 1500HD

2002-10

— — —

¹⁄₂ Ton Rear 2-Wheel Drive Van

Master Kit Includes:

Kit Type

Spring Width

Master Kit No.

Leaf Kit No. AST-1

Bracket Kit No.

U-Bolt Kit No.

Model

*Year Capty.

Remarks

—

Astro, Safari w/composite rear springs

1985-95 3400 — 3

— AST-2 Steel replacements for OEM composite springs, Order 2 ea. AST-1 springs and 1 ea. AST-2 u-bolt kit.

See Page 2 for "Remarks Key Chart". N/A - Not Available * For model years earlier then those listed refer to the "Standard Duty" section of this catalog. If the Heavy Duty Kit is not available for your application, refer to the "Standard Duty" or "Air Lift" sections of this catalog.

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