SUSPENSION PARTS
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Double-Eye Springs

1 ¾” Double-Eye Springs
We recommend replacing springs in pairs for the following reasons. The center bolt that binds the leaves together on your current spring may be in a different position, fore or aft, of the replacement spring, thus causing axle misalignment.
Also, replacing only one spring may cause your trailer to not be level; this is due to spring fatigue, causing the spring to flatten. Spring material becomes more brittle as time passes. In other words, if one spring has failed, the other may not be far behind.
PART NUMBER | DESCRIPTION | LEAVES | CAPACITY | LENGTH (CENTER OF EYE TO CENTER OF EYE) | EYE DIAMETER |
TP121 | Double-Eye Spring | 2 | 500lbs | 26” | 9/16″ |
TP168 | Double-Eye Spring | 3 | 700lbs | 20 5/16” | 9/16″ |
TP123 | Double-Eye Spring | 4 | 750lbs | 26″ | 9/16″ |
TP122 | Double-Eye Spring | 3 | 800lbs | 26” | 9/16″ |
TP169 | Double-Eye Spring | 3 | 1,000lbs | 20 ¼” | 9/16″ |
TP113 | Double-Eye Spring | 3 | 1,000lbs | 23 ½” | 9/16″ |
TP124 | Double-Eye Spring | 4 | 1,000lbs | 26” | 9/16″ |
TP219 | Double-Eye Spring | 3 | 1,250lbs | 25 ¼” | 9/16″ |
125-3 | Double-Eye Spring | 3 | 1,250lbs | 23.13” | 9/16″ |
TP114 | Double-Eye Spring | 4 | 1,500lbs | 23 ½” | 9/16″ |
TP050 | Double-Eye Spring | 3 | 1,500lbs | 26” | 9/16″ |
TP216 | Double-Eye Spring | 3 | 1,750lbs | 23 1/8” | 9/16″ |
TP212 | Double-Eye Spring | 4 | 1,830lbs | 25 ½” | 9/16″ |
TP051 | Double-Eye Spring | 4 | 2,000lbs | 26” | 9/16″ |
TP220 | Double-Eye Spring | 3 | 2,000lbs | 25 ½” | 9/16″ |
TP218 | Double-Eye Spring | 4 | 2,500lbs | 25 ¼” | 9/16″ |
TP079 | Double-Eye Spring | 4 | 2,500lbs | 23 1/8” | 9/16″ |
TP111 | Double-Eye Spring | 5 | 3,000lbs | 25 ¼” | 9/16″ |
AWS-6 | Double-Eye Spring | 6 | 3,000lbs | 26” | 9/16″ |
TP223 | Double-Eye Spring | 6 | 3,500lbs | 25 ¼” | 9/16″ |
Common Corresponding Parts
These are the nylon bushings, shackle bolts, and locking nuts used with the above springs.
PART NUMBER | DESCRIPTION |
536-1 | Nylon Bushing, 9/16” I.D X 11/16” O.D X 1 ¾” Length |
RT3152 | Shackle Bolt, 9/16” Dia. X 3” Length |
RT3166 | Locking Nut for 9/16” Shackle Bolt |
Slipper Springs

1 ¾” Slipper Springs
We recommend replacing springs in pairs for the following reasons. The center bolt that binds the leaves together on your current spring may be in a different position, fore or aft, of the replacement spring, thus causing axle misalignment. Also, replacing only one spring may cause your trailer to not be level; this is due to spring fatigue, causing the spring to flatten. Spring material becomes more brittle as time passes. In other words, if one spring has failed, the other may not be far behind.
PART NUMBER | DESCRIPTION | LEAVES | CAPACITY | LENGTH (CENTER OF EYE TO END OF SLIPPER) | EYE DIAMETER | BUSHING NUMBER |
---|---|---|---|---|---|---|
TP203 | Slipper Spring | 3 | 900lbs | 25” | 9/16” | 536-1 |
TP179 | Slipper Spring | 4 | 1,000lbs | 24.62” | 9/16” | 536-1 |
TP204 | Slipper Spring | 4 | 1,200lbs | 25” | 9/16” | 536-1 |
TP205 | Slipper Spring | 3 | 1,400lbs | 25” | 9/16” | 536-1 |
TP047 | Slipper Spring | 3 | 1,650lbs | 24 ½” | 9/16” | 536-2 |
TP208 | Slipper Spring | 4 | 2,300lbs | 25″ | 9/16” | 536-2 |
Replacement Bushing
PART NUMBER | DESCRIPTION | INSIDE DIAMETER | OUTSIDE DIAMETER | CAPACITY |
---|---|---|---|---|
536-1 | Spring Bushing, Nylon | 9/16″ | 11/16″ | 1 ¾” |

2” Slipper Springs
PART NUMBER | DESCRIPTION | LEAVES | CAPACITY | A | B | C | D | EYE DIAMETER | BUSHING NUMBER |
---|---|---|---|---|---|---|---|---|---|
TP301 | Slipper Spring | 2 | 1,500lbs | 26 1/8” | 24 7/8″ | 3” | 11 3/16” | 5/8” | RB1 |
TP230 | Slipper Spring | 4 | 2,000lbs | 26 1/8” | 24 7/8″ | 3” | 11 3/16” | 9/16” | PE-229 |
TP315 | Slipper Spring | 5 | 3,500lbs | 26 1/8” | 24 7/8″ | 3” | 11 3/16” | 9/16” | RB2 |
TP232 | Slipper Spring | 5 | 3,500lbs | 26 1/8” | 24 7/8″ | 3” | 11 3/16” | 9/16” | PE-229 |
TP299 | Slipper Spring | 5 | 3,500lbs | 26 1/8” | 24 7/8″ | 3” | 11 3/16” | 5/8” | RB1 |
TP051A | Slipper Spring | 7 | 4,000lbs | 26 1/8” | 24 7/8″ | 3” | 11 3/16” | 5/8” | RB1 |
DX140-3T3 | Slipper Spring | 7 | 4,000lbs | 26 1/8” | 24 7/8″ | 3” | 11 3/16” | 9/16” | 536-1 |
PART NUMBER | DESCRIPTION | INSIDE DIAMETER | OUTSIDE DIAMETER | LENGTH |
---|---|---|---|---|
RB1 | Spring Bushing, Steel w/ Rubber Sleeve | 5/8″ | 1.28″ | 2” |
RB2 | Spring Bushing, Steel w/ Rubber Sleeve | 9/16″ | 1.28″ | 2” |
PE-229 | Spring Bushing, Nylon | 9/16″ | 11/16″ | 2” |
536-1 | Spring Bushing, Nylon | 9/16″ | 11/16″ | 1 3/4” |
2 ½” Slipper Springs
PART NUMBER | DESCRIPTION | LEAVES | CAPACITY | A | B | C | D | EYE DIAMETER | BUSHING NUMBER |
---|---|---|---|---|---|---|---|---|---|
72-80 | Slipper Spring | 5 | 5,000lbs | 30” | 26 7/8″ | 4” | 13 1/2” | 3/4” | Rubber |
093161 | Slipper Spring | 5 | 5,000lbs | 32 1/2” | 29″ | 4” | 14” | 3/4” | Rubber |
72-77 | Slipper Spring | 5 | 5,000lbs | 30” | 26 7/8″ | 4” | 13 1/2” | 7/8” | Bronze |
72-21 | Slipper Spring | 5 | 5,000lbs | 30” | 26 7/8″ | 4” | 13 1/2” | 3/4” | Bronze |

3” Slipper Springs
PART NUMBER | DESCRIPTION | LEAVES | CAPACITY | A | B | C | D | EYE DIAMETER | BUSHING NUMBER |
---|---|---|---|---|---|---|---|---|---|
72-43-1 | Slipper Spring | 5 | 5,000lbs | 18.10” | 26 3/4″ | 4” | 14.57” | 1” | Rubber |
72-44-1 | Slipper Spring | 6 | 6,000lbs | 18.10” | 26 3/4″” | 4” | 14.57” | 1” | Rubber |
72-45-1 | Slipper Spring | 7 | 7,500lbs | 18.10” | 26 3/4″ | 4” | 14.57” | 1” | Rubber |

Nylon Bushings
PART NUMBER | DESCRIPTION | INSIDE DIAMETER | OUTSIDE DIAMETER | OVERALL LENGTH |
---|---|---|---|---|
536-2 | Spring Eye Bushing | ½” | 11/16” | 1 ¾” |
536-1 | Spring Eye Bushing | 9/16” | 11/16” | 1 ¾” |
PE-229 | Spring Eye Bushing | 9/16” | 11/16” | 2” |
NB3A | Spring Eye Bushing | 9/16” | ¾” | 1 ¾” |
PE-225 | Spring Eye Bushing | 9/16” | 7/8” | 1 ¾” |
14-54 | Spring Eye Bushing | 9/16” | 1 5/16” | 2” |
536-P | Spring Eye Bushing, Need 2 Per Side | 9/16” | 1” | 1 9/32” |
N184132 | Spring Eye Bushing, Need 2 Per Spring | 9/16” | 1 3/8” | 1 1/32” |
536-N | Spring Eye Bushing | 5/8” | 1 1/32” | 1 9/32″ |
722109 | Spring Eye Bushing | ¾” | 7/8″ | 1 ¾” |
722109A | Spring Eye Bushing | ¾” | 0.91” | 1 ¾” |
721590 | Spring Eye Bushing | 7/8” | 1 1/16” | 2 15/16” |

Rubber & Steel, Bronze Bushings
PART NUMBER | DESCRIPTION | INSIDE DIAMETER | OUTSIDE DIAMETER | OVERALL LENGTH |
---|---|---|---|---|
RB2 | Rubberized Steel-Sleeved | 9/16” | 1.28” | 2” |
RB1 | Rubberized Steel-Sleeved | 5/8” | 1.28” | 2” |
14-73 | Rubber with Steel Inside Sleeve, Fits Dexter 9k | 5/8” | 1 3/8” | 2 3/16” |
091413 | Rubber with Steel Inside Sleeve, Fits Hayes 10k | ¾” | 1 ¾” | 2 ¾” |
14-112 | Rubber with Steel Inside Sleeve, Fits Dexter 10k GD | ¾” | 2” | 2 5/8” |
14-67 | Bronze, Fits Dexter 10k GD | ¾” | 1” | 2 ½” |
14-111 | Bronze, Fits Dexter 10k GD (3″ Wide Springs) | 7/8” | 1 1/8” | 2 ½” |
8307 | Rubber with Steel Inside Sleeve, Fits Hayes 10k | 1” | 2 1/8” | 4” |
14-69 | Rubber with Steel Inside Sleeve, Fits Dexter 10k – 15k | 1” | 2” | 3” |
14-51 | Bronze, Fits Dexter 10k – 15k Old Style | 1” | 1 ¼” | 3” |
536-14-70 | Rubber with Steel Inside Sleeve | 1 1/8” | 2 1/8” | 3 ¾” |

U-Bolt Kits
PART NUMBER | DESCRIPTION |
---|---|
APUBR-10 | U-Bolt Kit For 1 ¾” Round Axle, Incl. (4) 1 ¾” Round U-Bolts (3/8” Dia., 4 ¼” Length), (8) 3/8” Hex Nuts, (2) U-Bolt Plates, For 2000lb Axles |
UBR-251 | U-Bolt Kit For 2 3/8” Round Axle , Incl. (4) 2 3/8” Round U-Bolts (½” Dia., 5 1/5” Length), (8) ½” Hex Nuts, (8) Lock washers, (2) U-Bolt Plates, For |
APUBR-9 | U-Bolt Kit For 3” Round Axle, Incl. (4) 3” Round U-Bolts (9/16” Dia., 7 ¼” Length), (8) 9/16” Hex Nuts, (8) 9/16” Lock washers, (2) U-Bolt Plates, For |

Single U-Bolts
PART NUMBER | DESCRIPTION |
---|---|
175643 | 1 ¾” Round U-Bolt (3/8” Dia., 4 ¼” Length), For 2000lb Axles, Incl. Nuts |
175668 | 2 ½” Round U-Bolt (9/16” Dia., 7 ¾” Length), For 7500lb Axles, Incl. Nuts |
176400 | 2 3/8″ Round U-Bolt (1/2” Dia., 5 ½” Length), For 3500lb Axles, Incl. Nuts |
176500 | 3″ Round U-Bolt (9/16” Dia., 7 ¼” Length), For 5200lb, 6000lb, 7000lb Axles, Incl. Nuts |
1755892 | 3″ Round U-Bolt (9/16” Dia., 7 ¼” Length), Incl. Nuts, For 5200lb, 6000lb, 7000lb Axles |
175666 | 3 ½” Round U-Bolt, For 8000lb Axles W/10 Leaf Springs, Incl. Nuts |
11-64 | 4″ Round U-Bolt, For 9000lb Axles, Incl. Nuts |
11-65 | 3 ½” Round U-Bolt, For 8000lb Axles, Incl. Nuts |
11-70 | 5″ Round U-Bolt, For 12,000lb & 15,000lb Axles, Incl. Locknuts |
11-77 | 5″ Round U-Bolt (5/8” Dia., 8 7/8” Length), For 10,000lb Axles, Incl. Nuts |
091148 | 5″ Round U-Bolt (5/8” Dia., 9 ½” Length), For 10,000lb GD Alko Axle, Incl. Nuts |

Packed U-Bolts
PART NUMBER | DESCRIPTION |
---|---|
SP01-020 | 1 ¾” Round U-Bolt (3/4” Dia., 4 ¼” Length), 2 Pk |
SP01-040 | 2 3/8” Round U-Bolt (1/2” Dia., 5 ½” Length), 2 Pk |
SP01-060 | 3″ Round U-Bolt (1/2” Dia., 7” Length), 2 Pk |
SP01-080 | 3″ Round U-Bolt (9/16” Dia., 7 ¼” Length), 2 Pk |
SP01-100 | 3 ½” Round U-Bolt (9/16” Dia., 8” Length), 2 Pk |
SP01-120 | 1 ½” Square U-Bolt (1/2” Dia., 5” Length), 2 Pk |
SP01-140 | 1 ¾” Square U-Bolt (9/16” Dia., 5” Length), 2 Pk |
SP01-160 | 2″ Square U-Bolt (9/16” Dia., 5 ¾” Length), 2 Pk |

U-Bolt Nuts & Washers
PART NUMBER | DESCRIPTION |
---|---|
12N | ½” U-Bolt Nut |
38N | 3/8” U-Bolt Nut |
6-113 | ¾” U-Bolt Nut |
916N | 9/16” U-Bolt Nut |
6-38 | 5/8” U-Bolt Locknut |

U-Bolt Axle Plates
PART NUMBER | DESCRIPTION |
---|---|
115983 | U-Bolt Plate For 1 ½” Square Axles, Use 1 ¾” Wide Springs |
116308 | U-Bolt Plate For 1 ¾” Square Axles, Use 1 ¾” Wide Springs |
117535 | U-Bolt Plate For 1 ¾” Round Axles, Use 1 ¾” Wide Springs |
117594 | U-Bolt Plate For 2” Square Axles, Use 1 ¾” Wide Springs |
117595 | U-Bolt Plate For 2 3/8” Round Axles, Use 1 ¾” Wide Springs |
12-4 | U-Bolt Plate For 2 3/8” Round Axles, Use 2” Wide Springs |
117858 | U-Bolt Plate For 2 ½” Round Axles, Use 2” Wide Springs |
117521 | U-Bolt Plate For 3” Round Axles, Use 1 ¾” Or 2” Wide Springs |
117581 | U-Bolt Plate For 3 ½” Round Axles, Use 1 ¾” Or 2” Springs |
12-42 | U-Bolt Plate For 4” Round Axles, Use 2” Wide Springs |
12-49 | U-Bolt Plate For 5” Round Axles, Use 2 ½” Springs |
12-53 | U-Bolt Plate For 5” Round Axles, Use 3” Wide Springs |
12-46 | U-Bolt Plate For 5” Round Axles, Use 3” Wide Springs |

Equalizers
PART NUMBER | DESCRIPTION | A | B | C | D | E | O.D. |
---|---|---|---|---|---|---|---|
RT3084 | Curved Equalizer | 7 ¾” | 3 7/8” | 9/16” | 9/16” | 2 7/8” | 1 ¾” |
A2252CB34 | Curved Equalizer | 7 ¾” | 3 7/8” | 3/4″ | 9/16” | 2 7/8” | 1 ¾” |
13-104-2 | Curved Equalizer | 5 5/8” | 2 13/16” | 9/16” | 9/16” | 2” | 1 ¾” |
220AIT3B | Short Curved Equalizer | 6 1/4″ | 3 1/8″ | 3/4″ | 9/16” | 2” | 1 ¾” |
RT3080 | Tall Triangle Equalizer | 6″ | 4″ | 9/16” | – | – | 1 ¾” |

PART NUMBER | DESCRIPTION | A | B | C | D | E | F | I.D. |
---|---|---|---|---|---|---|---|---|
EQ-4541 | Equalizer for 2″ Slipper Springs | 12″ | 4 3/4″ | 4 5/8″ | 9/16” | 7/8” | 9/16″ | 2 ¾” |
541-1 | Equalizer for 2″ Slipper Springs | 13″ | 5 1/2″ | 6 1/2″ | 9/16” | 7/8” | 9/16″ | 2 5/16″” |
541-3 | Equalizer for 2″ Slipper Springs | 11″ | 4 3/4″ | 4 3/4″ | 9/16” | 7/8” | 9/16″ | 2 5/16″ |

PART NUMBER | DESCRIPTION | A | B | C | D | E | F | I.D. |
---|---|---|---|---|---|---|---|---|
8319 | Equalizer, LH | 15 3/4″ | 7″ | 6 7/8″ | – | 1″ | 3/4″ | 3″ |
8320 | Equalizer, RH | 15 3/4″ | 7″ | 6 7/8″ | – | 1″ | 3/4″ | 3″ |

Shackle Straps (Shackle Links)
PART NUMBER | DESCRIPTION |
---|---|
RT3048 | Shackle Strap, 2 1/4″ Hole Center To Hole Center |
115052 | Shackle Strap, 2 5/8″ Hole Center To Hole Center |
RT3052 | Shackle Strap, 3 1/8″ Hole Center to Hole Center |

Equalizers / Suspension Bolts
PART NUMBER | DESCRIPTION |
---|---|
RT3156 | Double Eye Shackle Bolt, 9/16” X 3”, Grease Zerk, Incl. Nut |
166074 | Wet Equalizer Bolt, 7/8” X 4 5/8”, Incl. Nut |
RT3150 | Slipper Spring Shackle Bolt, 9/16” X 3”, Incl. Nut |
7-136-2 | Equalizer Bolt, 1”X 5 7/8”, Fits 10,000lb GD, Use Nut #6-112 |
7-181 | Spring Eye Bolt, 5/8” X 4”, Use W/Rubber Bushed Springs, Use Nut #6-38 |
126A1 | Wet Equalizer Bolt, ¾” X 3 ½”, Incl. Nut & Cotter Pin |
166078 | Equalizer Bolt, 7/8”, Incl. Castle Nut & Cotter Pin |
7-182 | Equalizer Bolt, 1” X 5”, New Style, 9000lb, Use Nut #6-112 |
RT3152 | Double Eye Shackle Bolt, 9/16” X 3”, Incl. Nut |
800-1 | NF Bolt, 3/8” X 3 ½” |
800-3 | Wet Equalizer Bolt, 7/8” X 5”, Fine Thread |
800-6 | Wet Equalizer Bolt, ¾” X 4 ½”, Use Nut #820-7 |
800-8 | Equalizer Bolt, 7/8” X 4 5/8” |

Suspension Nuts
PART NUMBER | DESCRIPTION |
---|---|
820-7 | Fine Thread Nut, Fits ¾” Shackle Bolt, Nylon Lock |
820-6 | Fine Thread Nut, Fits 7/8” Equalizer Bolt, Nylon Lock |
090636 | Locknut, Fits 1” Equalizer Bolt, 10,000lb & 12,000lb, Hayes |
6-113 | Locknut, ¾”, Fits Spring Bolt #7-135-2 & U-Bolt #11-70LN |
6-111 | Locknut, 7/8”, Fits Bolt #7-1-1 & 7-260-2 |
6-72 | Locknut, 1 1/8”, Fits Dexter Equalizer C-Bolt 7-170, 10,000lb, 12,000lb, & 15,000lb |
6-38 | Locknut, 5/8”, Fits Bolt #11-64LN & 1174LN, Spring Bolt #7-181 |
6-112 | Locknut, 1”, Fits #7-182 & 7-169, 10,000lb, 12,000lb, & 15,000lb Spring Eye Bolts, 9,000lb & 10,000lb GD Equalizer Bolts |
165093 | Castle Nut, ¾”, Fits Wet Equalizer Bolt #126LN |