Donovan Spring Co., Inc.
"Your One-Stop Spring & Suspension Specialists"
 

Phone: 603-627-9800
Toll Free: 1-800-458-3867
Fax: (603) 668-7135
E-Mail:
spring@donovancompany.com



 We send daily shipments Monday-Friday to the 48 contiguous United States.  Free UPS Ground shipping is offered in the contiguous US only.  Contact us for shipping quotes on special orders or for orders being shipped to Alaska or Canada.

Find the correct Timbren SES kit for your vehicle and click on the part # to be directed to our secure online shopping cart. 
Have questions? Not sure what you need?  We are here to help.  Call us during regular business hours or fill out our contact form and a parts associate will get back to you as soon as possible.

UNIVERSAL APPLICATIONS    
LIGHT DUTY
Pickup, Compact Vans, SUVs
 

2WD - FRONT 

2WD - REAR

4WD - FRONT 

 4WD - REAR

 1/2 TON, 3/4 TON  with leaf spring front suspension

 UF100 (d)

 UR100 (d)

UF100  (d)

UR100  (d)

 1 TON...with leaf spring front suspension

UF100  (d)

 UR350 (d) 

UF100  (d)

UR350 (d) 


MEDIUM & HEAVY DUTY
TRUCKS
 

 

KIT CAPACITY 

 AEON

QTY. 

 APPLICATIONS

FRONT AXLE
SES KITS
 

 MEDIUM DUTY 

 5,600 LBS

 A 540

 2

 4" - 7" Clearance

 MSR001 (wd)

 MEDIUM DUTY

 10,000 LBS

 A 740

 2

 7" - 10" Clearance

 MST001 (wd)

 MEDIUM DUTY

 5,600 LBS

 A 540

 2

 4" - 7" Clearance

 UMDF70 (d) 

 HEAVY DUTY

 15,000 LBS

 A 0200

 2

 4" - 7" Clearance

 UF200 (wd)

 HEAVY DUTY

8,000 LBS 

A0200 

4"-7" Clearance WINGED SNOWPLOW 

 UF200R (wd)

 HEAVY DUTY

 34,000 LBS

 A 0260

 2

 4"- 7" Clearance

 UF260 (wd)

 HEAVY DUTY

 15,000 LBS

 A 1525

 2

 4"- 7" Clearance

 HSR001 (wd)

 HEAVY DUTY

 16,000 LBS

 A 560

 2

 7"- 10" Clearance 

 HST001 (wd)

 HEAVY DUTY

 10,000 LBS

 A 560 

 1

 7" - 10" Clearance - WINGED SNOWPLOW

 HST.5 (wd)


MEDIUM & HEAVY DUTY
TRUCKS

 

KIT CAPACITY 

AEON 

QTY. 

APPLICATIONS 

REAR AXLE
SES KITS
 

SINGLE REAR AXLE 

 MEDIUM DUTY

 8,600 LBS

 A 540 

 2

 More than 5" Clearance 

 RES001 (d)

 MEDIUM DUTY

 8,600 LBS

 A 540

 2

 Less than 5" Clearance

 RES0S1 (d)

 MEDIUM DUTY

 15,000 LBS

 A 0200

 2

 Over 16,000 lb. (GAWR-Rear Axle Capacity)

 URMDE (B/O)

 HEAVY DUTY

 17,200 LBS

A540 

 More than 5" Clearance

RED001 (d) 

 HEAVY DUTY

 17,200 LBS

 A 540

 4

 Less than 5" Clearance

 RED0S1 (d) 

 HEAVY DUTY

 15,000 LBS

 A 0200

 2

 Over 16,000 lb. (GAWR-Rear Axle Capacity)

 URMDR (B/O)

 HEAVY DUTY

 16,000 LBS

 A 0200

 2

 "Hi-Capacity"

 URMDH (d)

 HEAVY DUTY

 16,000 LBS

 A 0200

 2

 5th wheel or Tow Truck

 URMDC (wd)

 HEAVY DUTY

 34,000 LBS

 A 0260

 2

 Extra "Hi-Capacity" Tow Truck

 REY001A (d)

 HEAVY DUTY

 15,000 LBS 

 A 0200

 2 

 Air Ride Suspension

 URMDA (d) 

HEAVY DUTY

15,000 LBS

A 0200 

Leaf Spring and Air Ride Suspension

URMDB  (d) 

TANDEM REAR AXLE 

 CHALMERS

 16,000 LBS

 A 0200 

 2

 Walking Beam, 2 SES kits required 

 URMDH (d)

 HEAVY DUTY

 15,000 LBS

 A 0200

 2

 For leaf or air suspension front tandem

 URMDF (B/O)

 HEAVY DUTY

 15,000 LBS

 A 0200

 2

 For leaf or air suspension rear tandem

 URMDR (B/O)

 HENDRICKSON RS, RT, RTE

 20,000 LBS

 A 560

 4

 Ride Quality

 HRTOA1 (wd)

 HENDRICKSON RT, RTE

 34,000 LBS

 A 0260

 2

 Off-Road & Stability

 HRTTO1 (wd)

 NEWAY

 20,000 LBS

 A 560

 4

 Air Ride

 HRTOA1 (wd)

 HENDRICKSON RS, RT, RTE

 20,000 LBS

 A 560

 2

 Tow Truck

 HRTTP02 (wd)

 NEWAY

 34,000 LBS

 A 0260

 2

 Tow Truck

 NRAD246T (wd)

 REYCO

 34,000 LBS

 A 0260

 2

 Tow Truck

 REY001A (wd)

 REYCO, FREIGHTLINER

 17,200 LBS 

 A 540

 4 

 4 Leaf Springs with more than 5" clearance

 RED001 (d) 

 HENDRICKSON HN

 64,000 LBS

A 0300 

High Capacity - More than 7" Clearance 

UR300 (wd) 


MEDIUM & HEAVY DUTY
TRAILERS

 

KIT CAPACITY 

AEON 

QTY. 

APPLICATIONS 

TRAILER 
SES KITS 

 LIGHT DUTY TRAILERS 

 1,000 LBS

 A170 

 2

 Camper & Utility Trailers 

 TRA1702 (d)

 MEDIUM DUTY TRAILERS

 7,000 LBS

 A103B

 2

 Low-Boy, 5th Wheels

 TRA1032 (wd)

 HIGHWAY TRAILERS

 10,000 LBS

 A1525

 2

 Under Steel Frame

 TRA15252 (wd)

 HIGHWAY TRAILERS

 10,000 LBS

 A1525

 2

 Outboard Spring or Alu Frame

 TRA15252A (wd)

 HIGHWAY TRAILERS

 16,000 LBS 

 A560

 2 

 6"-10" Clearance

 TRA5602 (wd) 


Note:  For tandem axle use 2 kits (one kit per axle).   All trailer kits require welding and / or drilling frame.