Light Duty Suspension Products June 2015

Standard Duty Helper Springs

Standard Duty Helper Kits are designed to add up to 2200 lbs.* of additional capacity to Import and Domestic pickups, vans and motorhomes. All standard duty helper kits are designed for the do-it-yourself market. These helper kits can be installed with common hand tools in less than one hour. No welding or drilling is required. Variable Rate Design This design has virtually no effect on the original suspension’s performance until additional loads are applied. When weight is added, secondary leaves engage to enhance suspension performance and support loads up to 2200 lbs.* Constant Rate Design Continuously enhanced suspension performance and support for loads up to 2200 lbs.* This style helper kit is designed for vehicles that are subjected to more constant loads such as pickups with service bodies and motorhomes. Easily installed with hand tools. Do-it-yourself installation. Improves cornering stability. Applications for most Import and Domestic trucks, vans, motorhomes and utility vehicles. Manufactured by Dayton Parts in the USA using the highest quality American made materials and components. * Never exceed the manufacturer’s suggested GVW.

Standard Duty Helper Springs

Variable Rate Design

Constant Rate Design

Typical 1500 Series

Typical 2500/9500 Series

Chevrolet / GMC 2-Wheel Drive Truck

Spring Wid.

Variable Rate Kit

Constant Rate Kit

Model

Year

Remarks

Blazer (full size), Jimmy, Tahoe, Yukon and Suburban; All 1973-00 2 ¹⁄₂ 505-2510 N/A

Some models changed to rear coil springs in 2000.

2000-07 2 ¹⁄₂ 505-2510 N/A 1973-87 2 ¹⁄₂ 505-2510 505-9510

Suburban and Yukon XL 2500

With multi-leaf springs only.

C10/1500, C20/2500, R10/1500, R20/2500

— — — — —

1963-72 — N/A

N/A

C10/1500, C20/2500 w/coil springs C10/1500, C20/2500 w/leaf springs

1963-72 2 ¹⁄₂ 505-2505 505-9505 1988-99 2 ¹⁄₂ 505-2510 505-9510 1988-00 2 ¹⁄₂ 505-2515 505-9515 1988-00 2 ¹⁄₂ 505-2515 505-9515

C1500 C2500 C3500

H6, Trucks with OEM single leaf helper see Heavy Duty section of this online catalog. Trucks with OEM single leaf helper see Heavy Duty section of this online catalog.

1973-91 2 ¹⁄₂ 505-2505 505-9505

C30/3500, R30/3500 (“V” body only); All

1986-93 2 ¹⁄₂ 500-1515 N/A 1982-10 2 ¹⁄₂ 500-1535 N/A 1999-13 2 ¹⁄₂ 505-2515 505-9515

S10/15 Blazer, Jimmy

— —

S10/15 Pickup, Colorado, Canyon

Silverado 1500, 2500

H6, Trucks with OEM helper see Heavy Duty section of this online catalog.

2014-15 2 ¹⁄₂ N/A

N/A

Silverado 1500

—

2002-13 2 ¹⁄₂ 505-2567 N/A

Silverado 1500HD, 2500HD and 3500

For applications with spring clip or second stage interference.

505-25673 N/A

Silverado 2500HD and 3500

2011-15 3

Without OE Helper.

If the Standard Duty Kit is not available for your application, refer to the "Heavy Duty" or "Air Lift" sections of this catalog. See Page 2 for "Remarks Key Chart". N/R - Not Recommended N/A - Not Available

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