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For Shaft Springs: Left Hand Spring Is Shown

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RAMP SPRING 1 1/4"SHAFT RH 3912 IN. LBS. (SKU: 08-611-R)RAMP SPRING 1 1/4"SHAFT RH 3912 IN. LBS. (SKU: 08-611-R)
RAMP SPRING 1 1/4" SHAFT LH 3912 IN.  LBS. (SKU: 08-611-L)RAMP SPRING 1 1/4" SHAFT LH 3912 IN. LBS. (SKU: 08-611-L)
RAMP SPRING 1 1/2"SHAFT RH 3912 IN. LBS. 7180150 (SKU: 08-610-R)RAMP SPRING 1 1/2"SHAFT RH 3912 IN. LBS. 7180150 (SKU: 08-610-R)
RAMP SPRING 3/4" SHAFT LH 780 IN. LBS. .362 WIRE RED (SKU: 08-608-L)RAMP SPRING 3/4" SHAFT LH 780 IN. LBS. .362 WIRE RED (SKU: 08-608-L)
RAMP SPRING 3/4" SHAFT RH 780 IN.  LBS. .362 WIRE WHITE (SKU: 08-608-R)RAMP SPRING 3/4" SHAFT RH 780 IN. LBS. .362 WIRE WHITE (SKU: 08-608-R)
RAMP SPRING 1 1/2"SHAFT LH 3912 IN. LBS. 7180151 (SKU: 08-610-L)RAMP SPRING 1 1/2"SHAFT LH 3912 IN. LBS. 7180151 (SKU: 08-610-L)
RAMP SPRING 1" SHAFT LH 1950 IN.  LBS. (SKU: 08-612-L)RAMP SPRING 1" SHAFT LH 1950 IN. LBS. (SKU: 08-612-L)
RAMP SPRING 1" SHAFT RH 1950 IN.  LBS. (SKU: 08-612-R)RAMP SPRING 1" SHAFT RH 1950 IN. LBS. (SKU: 08-612-R)
RAMP SPRING 1 1/2"SHAFT RH 3912 IN. LBS.  RS16933RH (SKU: RS16933RH)RAMP SPRING 1 1/2"SHAFT RH 3912 IN. LBS. RS16933RH (SKU: RS16933RH)
RAMP SPRING 1 1/2"SHAFT LH 3912 IN. LBS.  RS16933LH (SKU: RS16933LH)RAMP SPRING 1 1/2"SHAFT LH 3912 IN. LBS. RS16933LH (SKU: RS16933LH)
RAMP SPRING LEFT HAND (SKU: 08-600)RAMP SPRING LEFT HAND (SKU: 08-600)
RAMP SPRING 2" SHAFT LH 3180 IN. LBS. 7180152 (SKU: 08-609-L)RAMP SPRING 2" SHAFT LH 3180 IN. LBS. 7180152 (SKU: 08-609-L)
RAMP SPRING 2" SHAFT RH 3180 IN LBS.  7180153 (SKU: 08-609-R)RAMP SPRING 2" SHAFT RH 3180 IN LBS. 7180153 (SKU: 08-609-R)
Ramp Spring - RH (SKU: 08-601)Ramp Spring - RH (SKU: 08-601)
Single Ramp Spring, Right Hand, 2-1/2" Shaft with 2387 Inch Lbs. (SKU: 08-613-R)
Single Ramp Spring, Left Hand, 2-1/2" Shaft with 2387 Inch Lbs. (SKU: 08-613-L)
Lo-Boy Ramp Spring  FOR 1 1/2" ROD (3/8 MATERIAL)8600006 (SKU: 08-605)Lo-Boy Ramp Spring FOR 1 1/2" ROD (3/8 MATERIAL)8600006 (SKU: 08-605)

Each Ramp Door Spring is a complete system, designed for enclosed (cargo and specialty) trailers, and
includes everything necessary for proper installation, except mounting bolts. The system features a dual
drum and dual cable to prevent the ramp door from free falling in the event one cable is accidentally cut.
The universal mounting bracket has two 3/8” holes that allow the installer to bolt to the rear header or

the bracket can be welded. The four part numbers offered cover a majority of enclosed trailers, but custom
assemblies are also available for finished door weights ranging from 50 lbs. to 300 lbs. The system
is warranted for three years against defects in material and/or workmanship.
tom

Part # Description Ref. # Mfg. #
08-650 Ramp Door Spring - Single Spring (66”) - 80 lbs 80725 CBS218275-66
08-651 Ramp Door Spring - Single Spring (96”) - 80 lbs. 80730 CBS218275-96
08-652 Ramp Door Spring - Double Spring (81”) - 120 lbs. 80735 CBD192221-81
08-653 Ramp Door Spring - Double Spring (96”) - 160 lbs. 80740 CBD218275-96
08-654 Ramp Door Spring - Single Spring (53”) - 50 lbs. 80743 CBSR1872220SC-53
08-656 Ramp Door Spring - Single Spring (96”) - 80 lbs. 80744 CBS218275-96LB

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RAMP SPRING 1/2" SHAFT RH SS STAINLESS STEEL 312-61R 537 ft-lbs (SKU: 08-606-RS)RAMP SPRING 1/2" SHAFT RH SS STAINLESS STEEL 312-61R 537 ft-lbs (SKU: 08-606-RS)
Aluminum Tri-Fold Tailgate Ramp (SKU: 28-900)Aluminum Tri-Fold Tailgate Ramp (SKU: 28-900)
Gorilla-Lift - Ramp Lifting System (2 lifts per box) GL1 (SKU: 34-105)Gorilla-Lift - Ramp Lifting System (2 lifts per box) GL1 (SKU: 34-105)
RAMP DOOR SPRING SYSTEM. DOUBLE SPRINGS FOR 160# DOOR. 96" PIPE. INCLUDES 2 CABLES (ERS160D96) (SKU: ERS160D96*)RAMP DOOR SPRING SYSTEM. DOUBLE SPRINGS FOR 160# DOOR. 96" PIPE. INCLUDES 2 CABLES (ERS160D96) (SKU: ERS160D96*)
RAMP DOOR SPRING SYSTEM - SINGLE SPRING. 66" PIPE FOR 80# DOOR. INCLUDES 2 CABLES (ERS80S66) (SKU: 08-650)RAMP DOOR SPRING SYSTEM - SINGLE SPRING. 66" PIPE FOR 80# DOOR. INCLUDES 2 CABLES (ERS80S66) (SKU: 08-650)
RAMP DOOR SPRING SYSSTEM. SINGLE SPRING FOR 80# DOOR. 96" PIPE. iNCLUDES 2 CABLES. (SKU: 08-656)RAMP DOOR SPRING SYSSTEM. SINGLE SPRING FOR 80# DOOR. 96" PIPE. iNCLUDES 2 CABLES. (SKU: 08-656)
RAMP DOOR SPRING SYSTEM. SINGLE SPRING. 96" PIPE. FOR 80# DOOR. INCLUDES 2 CABLES (ERS80S96) (SKU: 08-651)RAMP DOOR SPRING SYSTEM. SINGLE SPRING. 96" PIPE. FOR 80# DOOR. INCLUDES 2 CABLES (ERS80S96) (SKU: 08-651)
RAMP DOOR SPRING SYSTEM. SINGLE SPRING FOR 50# DOOR. 53" PIPE W/SINGLE TAKE UP DRUM. INCLUDES 1 CABLE (SKU: 08-654)RAMP DOOR SPRING SYSTEM. SINGLE SPRING FOR 50# DOOR. 53" PIPE W/SINGLE TAKE UP DRUM. INCLUDES 1 CABLE (SKU: 08-654)
RAMP DOOR SPRING SYSTEM. DOUBLE SPRING. 81" PIPE. FOR 120# DOOR. INCLUDES 2 CABLES. (ERS120D81) (SKU: 08-652)RAMP DOOR SPRING SYSTEM. DOUBLE SPRING. 81" PIPE. FOR 120# DOOR. INCLUDES 2 CABLES. (ERS120D81) (SKU: 08-652)
RAMP DOOR SPRING SYSTEM. DOUBLE SPRINGS FOR 160# DOOR. 96" PIPE. INCLUDES 2 CABLES (ERS160D96) (SKU: 08-653)RAMP DOOR SPRING SYSTEM. DOUBLE SPRINGS FOR 160# DOOR. 96" PIPE. INCLUDES 2 CABLES (ERS160D96) (SKU: 08-653)
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