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.

CHEVROLET - GENERAL MOTORS  
LIGHT DUTY

PICKUP TRUCK
 

YEAR 

2WD - FRONT 

2WD - REAR 

4WD - FRONT 

4WD - REAR 

 COLORADO, CANYON 

2004-11 

GMFC2 

GMRCC 

GMFC4 

GMRCC  

 S10, ZR2

1994-04 

-

GMFS10 

GMRS10A 

 S10, S15, SONOMA

2000-04 

GMFS10 

GMRS10B 

GMFS10

GMRS10B 

 S10, S15, SONOMA

1975-99 

GMFS10 

GMRS10A 

GMFS10

GMRS10A 

 1500 SIERRA, SILVERADO, DENALI... excluding XFE

2007-11 

GMFK15CA 

GMRCK15S 

GMFK15CA

GMRCK15S 

 1500 SIERRA, SILVERADO ...XFE

2009-11

GMFK15CA

GMRCK15E 

-

-

 1500 SIERRA, SILVERADO, DENALI... Regular Cab or 3 door

1999-06 

GMFK25S 

GMRCK15S  

GMFK15A

GMRCK15S 

 1500 SIERRA, SILVERADO, DENALI, WT, Extend or Crew Cab

1999-06 

GMFK25S

GMRCK15S 

GMFK15A 

GMRCK25S 

 1500 AVALANCHE  LS, LT, LTZ

2007-11 

GMFK15B 

GMRYS4 

GMFK15B  

GMRYS4 

 1500 AVALANCHE  GVW 7000 LB. or less

2002-06 

GMFK15A

GMRG25C 

GMFK15A

 GMRG25C

 1500 HD SIERRA, SILVERADO.... incl. CLASSIC

2001-07 

GMFK25S 

GMRCK25S 

GMFK25S  

GMRCK25S 

 C10, C1500, K10, K1500

1988-99 

GMFC1588H 

GMRC25HD 

GMFK35C 

GMRCK25 

 C10, C1500, K10, K1500

1973-87 

GMFC15 

GMRC20 

GMFK10 

GMRK10 

 C10, C1500, K10, K1500.... with rear coil springs

1963-72 

 GMFC15

GMRC10A 

 2500 SIERRA, SILVERADO

2011 

 GMFK25D

GMRCK25D 

 GMFK25D 

GMRCK25D 

 2500 SIERRA, SILVERADO, 1500HD, 2500HD

1999-10 

GMFK25S 

GMRCK25S 

GMFK25S 

GMRCK25S  

 2500 AVALANCHE   GVW 8600 LB.

2002-06 

GMFK25S 

GMRSB4S 

GMFK25S 

GMRSB4S 

 C20, C2500

1988-99 

GMFC1588H 

GMRC25HD 

 C20, C2500

1973-87 

GMFC15 

GMRC20 

 C20, C2500...with rear coil springs

1963-72 

GMFC15 

GMRC10A 

 K20, K2500.....with front cast lower control arm

1996-00 

GMFK25S 

GMRCK25 

 K20, K2500....with front stamped lower control arm

1988-98 

GMFK35C 

GMRCK25 

 K20, K2500

1970-87 

-

GMFK10 

GMRK10 

 3500 SIERRA, SILVERADO

 2011

 GMFK25D

GMRCK25D 

 GMFK25D

GMRCK25D 

 3500 SIERRA, SILVERADO

2001-10 

 GMFK25S

GMRCK35S 

GMFK25S 

GMRCK35S 

 C30, C3500

1988-00 

 GMFC1588H 

GMRCK35 

 C30, C3500

1973-87 

GMFC15 

GMRC30 

 C30, C3500

1968-72 

GMFC15 

GMRP30 

 K30, K3500....with front cast lower control arm

1996-00 

-

GMFK25S 

GMRCK35 

 K30, K3500...with front stamped lower control arm

1988-96 

GMFK35C 

GMRCK35 

 K30, K3500

1970-87 

GMFK10 

GMRK30 


 CAB & CHASSIS

 YEAR

 2WD - FRONT

 2WD - REAR

 4WD - FRONT

 4WD - REAR

 3500 SIERRA, SILVERADO

2011

 GMFK25D

GMRCK25D 

 GMFK25D 

GMRCK25D 

 3500 SIERRA, SILVERADO  excluding single rear wheel

 2001-10

GMFK25S

 GMRCK35C 

 GMFK25S

 GMRCK35C 

 3500 SIERRA, SILVERADO  single rear wheel

 2006-10

GMFK25S

 GMRCK35S 

 GMFK25S

 GMRCK35S 

 C30, C3500, K30, K3500 with front cast lower control arm

 1996-00

 GMFC1588H

 GMRC30

 GMFK25S

 GMRC30

 C30, C3500, K30, K3500 with front stamped lower control arm

 1990-96

 GMFC1588H

 GMRC30

 GMFK35C

 GMRC30

 C30, C3500, K30, K3500

 1973-89

 GMFC15

 GMRC30

 GMFK10

 GMRK30

 2500 HD, 3500 HD OEM/Box Delete 42" frame spacing

 2007-10

 GMFK25S

 GMRCK35S 

 -

 -

 3500 HD... 34" frame spacing

2007-10

 GMFK25S

 GMRCK35S 

 GMFK25S

 GMRCK35C

 C3500 HD with leaf spring front suspension

 1991-04

 GMF35HDA

 GMR35HDM

 -


 SEVERE SERVICE - PICKUP AND CAB & CHASSIS     TOW TRUCK - CAR CARRIER - SLIDE-IN CAMPER - DUMP TRUCK - AERIAL DEVICES
 C/K, 2500/3500 SIERRA, SILVERADO

 2011

  GMFK25D

GMRTT35D 

 GMFK25D

GMRTT35D 

 C/K, 2500/3500 SIERRA, SILVERADO    PICKUP STYLE

 2001-10

 GMFK25S

 GMRTT35S

 GMFK25S

 GMRTT35S

 C/K, 3500  CAB & CHASSIS STYLE

 2001-10

 GMFK25S

 GMRTT35C

 GMFK25S

 GMRTT35C

 C/K, 2500/3500   PICK UP STYLE

 1990-00

 GMFC1588H

 GMRCK35MA

 GMFK25S

 GMRCK35MA

 C/K, 3500  CAB & CHASSIS STYLE

 1990-00

 GMFC1588H

 GMRTTC35

 GMFK25S

 GMRTTC35

 C2500, C3500, K2500, K3500

 1975-89

 GMFC15

 GMRTTC30

 GMFK10

GMRTTK30


 MEDIUM & HEAVY DUTY - CONVENTIONAL

YEAR

FRONT
REGULAR

FRONT
HEAVY DUTY

REAR
REGULAR

REAR
HEAVY DUTY
 

 4500, 5500, 6500, 7500  EXCLUDING FOUR WHEEL DRIVE

2003-09 

 GMFTK

 -

 GMRC55

 GMRTKM

 4500, 5500, 6500, 7500   FOUR WHEEL DRIVE

2005-09 

 GMF55AWD

 -

 GMRC55

 GMRTKM

 6500 LoPro

2003-09 

 GMFTKLP

 -

 GMRC55

 GMRTKM

 TOPKICK & KODIAK C60, C70, C6000, C7000  except LoPro

1991-02 

GMFTK 

 -

 GMRC55

 GMRTKM

 TOPKICK & KODIAK C60, C70, C6000, C7000  LoPro

1991-02 

 GMFTKLP

 -

 GMRC55

 GMRTKM

 C50, C60, C70, C6000, C7000

1973-90 

 GMFC70

 -

 GMRC70

 -


 MEDIUM & HEAVY DUTY - CAB FORWARD

YEAR 

FRONT
REGULAR

FRONT
HEAVY DUTY 

REAR
REGULAR 

REAR
HEAVY DUTY 

 W35, W3500

 1998-09

 GMFW4C

 -

 GMRW35

 GMRW55

 W4/4000/4500, W5,5000,5500

 1988-09

 GMFW4C

 -

 GMRW4A

 GMRW55

 W7, 7000

 1988-96

 GMFW7 

 -

 RES0S1 (d) 

 URMDB (d) 

 T5500, T6500, T7500, T8500

 1997-09

 GMFTK

 -

 GMRC55

 GMRTKM

 

CHEVROLET - GENERAL MOTORS   SUV 

YEAR 

2WD- FRONT 

2WD - REAR 

4WD - FRONT 

4WD - REAR 

 HHR2006-11

 -

GMRHHR (p) 

 -

-

 AZTEK, RENDEZ VOUS...except air shocks 

2001-07 

GMRAZT (p) 

GMRREN (p) 

 SATURN, VUE 

2002-07 

GMRVUE (p) 

GMRVUE (p) 

 EQUINOX, TORRENT

2005-06 

GMRVUE (p) 

GMRVUE (p) 

 TRAIL-BLAZER, ENVOY, BRAVADA, RAINIER

2002-09 

GMRETB 

GMRETB 

 BLAZER, JIMMY Classic...old body style

2002-05 

GMFS10 

GMRJB 

 GMFS10

GMRJB

S10 BLAZER, JIMMY, ENVOY, BRAVADA ...except full size

1995-01 

GMFS10 

GMRJB

GMFS10

GMRJB 

 S10 BLAZER, JIMMY, BRAVADA....except full size

1975-94 

GMFS10

GMRS10A 

GMFS10

GMRS10A

 DENALI, ESCALADE, YUKON, TAHOE...excluding XFE

2007-11 

GMFK15B 

GMRYS4 

 GMFK15B

GMRYS4

 DENALI, ESCALADE, YUKON, TAHOE... XFE 2009-11

 GMFK15B

 GMRYS4E

 -

- 

 DENALI, ESCALADE.... coil rear

2002-06 

GMFK25S 

GMRYS4 

GMFK15A 

GMRG25C 

 DENALI, ESCALADE... leaf rear

2000-01 

GMFC1588H 

GMRYT2 

GMFK35C 

GMRYT4 

 YUKON, TAHOE...coil rear

2000-06 

GMFK25S 

GMRYS4 

GMFK15A 

GMRG25C 

 YUKON, YUKON-DENALI, TAHOE, ESCALADE, leaf rear

1992-00 

 GMFC1588H

GMRYT2  

GMFK35C 

GMRYT4

 HUMMER H2

2003-10 

GMFK25S

GMRH2 

 HUMMER H3, H3T

2005-10 

GMFC4 

GMRETB 

 SUBURBAN, YUKON XL 1500

2007-11 

GMRYS4

GMFK15B 

GMRYS4

 SUBURBAN, YUKON XL 1500

2000-06 

GMFK25S  

GMRYS4 

GMFK15A

GMRYS4 

 SUBURBAN, YUKON XL 2500

2000-11 

GMFK25S 

GMRSB4S 

 GMFK25S 

GMRSB4S 

 SUBURBAN, JIMMY, K-BLAZER...full size

1993-99 

GMFC1588H 

GMRSB 

GMFK35C 

GMRSB4 

 SUBURBAN, JIMMY, K-BLAZER...full size

1992 

GMFC1588H

GMRC20 

GMFK35C 

GMRK10 

 SUBURBAN, JIMMY, K-BLAZER...full size

1973-91 

GMFC15 

GMRC20 

GMFK10 

GMRK10  


 VAN, MOTOR HOME 

YEAR 

2WD - FRONT  

2WD - REAR 

4WD - FRONT  

4WD - REAR 

 ASTRO, SAFARI...steel rear springs 

1996-05 

GMFAST 

GMRASTB 

GMFAST4 

GMRASTB 

 ASTRO, SAFARI...commercial appl. - steel rear springs

1996-05 

GMFAST 

GMRASTBHD 

GMFAST4

 GMRASTBHD

 ASTRO, SAFARI...composite rear springs

1985-95 

GMFAST 

GMRASTR 

GMFAST 

GMRASTR 

 UPLANDER, TERRAZA, MONTANA SV6, RELAY 

2005-09 

-

GMRAZT (p) 

GMRUPL (p) 

 VENTURE, MONTANA, TRANS SPORT, SILHOUETTE ...excluding air shocks 

1997-04 

GMRAZT (p) 

GMRREN (p) 

 LUMINA APV, TRANS SPORT, SILHOUETTE

1990-96 

GMRAPV 

 LUMINA (CAR), GRANDPRIX (CAR)

1992-96 

GMRLUM 

 G/H1500-CHEVY, EXPRESS, SAVANA

2003-11 

GMFK15A 

GMRG25C 

 GMFK15A

 GMRG25C 

 G1500-CHEVY, EXPRESS, SAVANA

1996-02 

GMFC1588H 

GMRG25C  

 G10/1500

1975-96 

GMFG20 

GMRG20 

 G/H2500-CHEVY, EXPRESS, SAVANA...6 bolt wheel

2003-11 

GMFK15A 

GMRG25C 

GMFK15A 

GMRG25C 

 G2500-CHEVY, EXPRESS, SAVANA...8 bolt wheel

2003-11 

GMFK15A 

GMRG35 

 G2500-CHEVY, EXPRESS, SAVANA...6 bolt wheel

1996-02 

GMFC1588H  

GMRG25C 

 G2500-CHEVY, SAVANA DIESEL...8 bolt wheel

1996-02 

GMFC1588H 

GMRG35

 G20/2500

1975-96 

GMFG20 

GMRG20 

 G3500-CHEVY, EXPRESS, SAVANA

2003-11 

GMFK15A

 GMRG35

GMFK15A 

GMRG35

 G3500-CHEVY, EXPRESS, SAVANA

1996-02 

GMFC1588H  

GMRG35 

-

 G30/ 3500...box frame - van body

1975-96 

GMFG20 

GMRG35

- 


CUTAWAY VAN, MOTOR HOME 

YEAR 

FRONT - MOTOR HOME  

FRONT - CUBE VAN 

REAR - MOTOR HOME 

REAR - CUBE VAN 

 G3500, G4500...Channel frame2003-11 

 GMFK15A 

 GMFK15A 

 GMRG30

 GMRG30LB

 G3500....Channel frame1998-02

 GMFC1588H

 GMFC1588H

 GMRG30

 GMRG30LB

 G3500....Channel frame, with bump stop on axle1997-98

 GMFC1588H

 GMFC1588H

 GMRG35A 

 -

 G30, G3500...Channel frame

1975-96 

GMFG20 

GMFG20

GMRG30 

GMRG30LB 

 P30, P32, P42, P60..bump stop over U bolt pad

1995-99 

GMRP30MH  

GMRP30MH 

 P30, P32, P42, P60...ind. front suspension (coil springs)

1975-99 

GMFP30W 

GMFP30W 

GMRP30 

GMRP30HD 

 P42 B..."I" beam front suspension (leaf springs)

1975-99 

WFRW22 

WFRW22  

GMRP30 

GMRP30HD  

 P60..."I" beam front suspension (leaf springs)

1975-99 

GMFP60 

GMFP60  

GMRP30  

GMRP30HD 


(d) drilling required  -  (p)  professional installation required  -  (w) welding required  -  (wd) welding & drilling required