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Spring Seat for Typical 3,500-lb, 2" Square Trailer Axles - Galvanized Steel

Our Price: $5.38
In Stock
Stop worrying about rusted trailer parts after trips to the boat ramp or long days in the rain. This galvanized spring seat welds to your 2" square axle and fits 1-3/4" or 2" springs, fighting off rust for seasons to come.Easy Upgrade or Replacement: Perfect for axle repairs or custom trailer projects - just remember, you'll need two per axle. Specs Application: Weld-on spring seat for trailer axles Fits square, 2" axle (typical 3,500-lb axle) Works with 1-3/4" or 2" wide leaf springs General: Material: galvanized steel Quantity: 1 spring seat (2 required per axle)
  • Spring Seats
  • Car Hauler
  • Camper
  • Utility Trailer
  • Square Axle - 2 Inch
  • 3500 lbs
  • CE Smith

Spring Seat for Typical 5,200-lb to 7,200-lb, Round Trailer Axles with 3" Diameter

Our Price: $11.90
In Stock
The spring seat is a necessary component of your trailer's suspension system. When mounted with 1-3/4" or 2" wide leaf springs, it adds extra support and provides proper positioning for the axle.Features: Welds onto round, 3" diameter axle (typical 5,200-lb to 7,200-lb axle) Works with 1-3/4" or 2" wide spring Cutout on flat side of seat surrounds raised knob on leaf spring to prevent turning or shifting Provides extra support and secure positioning for trailer axle Please note: 2 spring seats are required for each axle
  • Spring Seats
  • Snowmobile Trailer
  • Camper
  • Boat Trailer
  • Car Hauler
  • Utility Trailer
  • Round Axle - 3 Inch
  • TruRyde

U-Bolt Kit for Mounting 5,200-lb to 7,000-lb, Round Trailer Axles - 7" Long U-Bolts - APUBR-8

Retail: $72.59
Our Price: $68.98
In Stock
Mount your round, 3" diameter axle to your trailer's leaf springs with this U-bolt kit. U-bolts, plates and nuts included.Features: Attaches trailer axle to leaf springs Includes: (4) 7" Long U-bolts (1755892) (2) U-Bolt plates for 1-3/4" springs (TP-3000175) (8) 1/2"-20 Hex nuts (12N) Spring seats required for mounting axle to leaf spring sold separately Specs: Axle diameter: 3" Typical 5,200-lb to 7,000-lb axle Spring width: 1-3/4" Thread dimensions: 2" long x 1/2"-20 Dimensions: see below
  • U-Bolt Kits
  • Camper
  • Car Hauler
  • Utility Trailer
  • Round Axle - 3 Inch
  • 7 Inch Long
  • 5200 lbs - 7000 lbs
  • Dexter

SumoSprings Trailer Helper Springs - Single Axle - 3" Springs - 5.4K - Underslung - Preorder

Our Price: $999.99
COMING SOON! Micro-cellular trailer suspension springs mount above the leaf springs to create a cushion between the axle and frame, reducing bounce, hop, and sway while towing.That adjustment lets you position the spring where it needs to contact during suspension movement. Secure Mounting at the Leaf Springs Loose or shifting suspension hardware can undermine how a helper spring works in use.
  • Leaf Spring Enhancement System
  • Snowmobile Trailer
  • Car Hauler
  • Boat Trailer
  • Camper
  • Utility Trailer
  • 5400 lbs
  • Single Axle
  • SuperSprings Intl

SumoSprings Trailer Helper Springs - Single Axle - 2" Springs - 2.8K - Underslung - Preorder

Our Price: $429.99
COMING SOON! Micro-cellular trailer suspension springs mount above the leaf springs to create a cushion between the axle and frame, reducing bounce, hop, and sway while towing.That adjustment lets you position the spring where it needs to contact during suspension movement. Secure Mounting at the Leaf Springs Loose or shifting suspension hardware can undermine how a helper spring works in use.
  • Leaf Spring Enhancement System
  • Boat Trailer
  • Snowmobile Trailer
  • Car Hauler
  • Camper
  • Utility Trailer
  • 2800 lbs
  • Single Axle
  • SuperSprings Intl

SumoSprings Trailer Helper Springs - 2-1/2" Springs - 5.4K - Underslung - Preorder

Our Price: $849.99
COMING SOON! Micro-cellular trailer suspension springs mount above the leaf springs to create a cushion between the axle and frame, reducing bounce, hop, and sway while towing.That adjustment lets you position the spring where it needs to contact during suspension movement. Secure Mounting at the Leaf Springs Loose or shifting suspension hardware can undermine how a helper spring works in use.
  • Leaf Spring Enhancement System
  • Snowmobile Trailer
  • Car Hauler
  • Boat Trailer
  • Camper
  • Utility Trailer
  • 4400 lbs
  • Single Axle
  • SuperSprings Intl

SumoSprings Trailer Helper Springs - Single Axle - 2" Springs - 1.5K - Underslung - Preorder

Our Price: $399.99
COMING SOON! Micro-cellular trailer suspension springs mount above the leaf springs to create a cushion between the axle and frame, reducing bounce, hop, and sway while towing.That adjustment lets you position the spring where it needs to contact during suspension movement. Secure Mounting at the Leaf Springs Loose or shifting suspension hardware can undermine how a helper spring works in use.
  • Leaf Spring Enhancement System
  • Snowmobile Trailer
  • Car Hauler
  • Boat Trailer
  • Camper
  • Utility Trailer
  • 1500 lbs
  • Single Axle
  • SuperSprings Intl

SumoSprings Trailer Helper Springs w/ Line Relocation Bracket - Single Axle - 5K to 8K - Overslung

Our Price: $294.99
In Stock
Improves suspension, handling and safety. Progressive spring rate. Provides additional support as needed so you always have a smooth, comfortable ride.Features: Improves suspension, handling and safety Provides additional support as needed so you always have a smooth, comfortable ride Allows the leaf spring ample movement while cushioning light loads Becomes more rigid as more weight is added Increases stability, providing great performance while hauling heavy loads Raises trailer ride height Works independently side-to-side Helps compensate for off-center loads Reduces body roll when swerving and turning corners Works to eliminate trailer sway Acts as shock absorbers, taking the brunt of bumps and rough roads Reduces load on leaf spring assembly Extends the life of your trailer's suspension Designed to work with a suspension system that is in good working order 2 Jounce-style springs, line relocation bracket, mounting brackets and hardware are included Maintenance-free - no tubing to run or air pressure to monitor like with air springs Simple, no-drill installation Made in the USA Specs: Application: 5,000-lb to 8,000-lb single, overslung axle - springs sit over axle For tandem axle applications, use 2 kits Capacity: 900 lbs at 50 percent compression Do not exceed the trailer's weight-carrying capacity Spring dimensions: 5" tall x 4" diameter Compresses up to 65 percent of original height with full memory rebound Required clearance between top of spring plate and bottom of trailer frame: 5-5/16" - 6-1/2" Limited lifetime warranty 30-Day satisfaction guarantee Note: Does not work with spring plates wider than 4-1/4".
  • Leaf Spring Enhancement System
  • Boat Trailer
  • Car Hauler
  • Snowmobile Trailer
  • Camper
  • Utility Trailer
  • 8000 lbs
  • 7000 lbs
  • 5000 lbs
  • 6000 lbs
  • Single Axle
  • SuperSprings Intl

SumoSprings Trailer Helper Springs w/ Line Relocation Bracket - Single Axle - 3K to 5K - Overslung

Our Price: $267.99
In Stock
Improves suspension, handling and safety. Progressive spring rate. Provides additional support as needed so you always have a smooth, comfortable ride.Features: Improves suspension, handling and safety Provides additional support as needed so you always have a smooth, comfortable ride Allows the leaf spring ample movement while cushioning light loads Becomes more rigid as more weight is added Increases stability, providing great performance while hauling heavy loads Raises trailer ride height Works independently side-to-side Helps compensate for off-center loads Reduces body roll when swerving and turning corners Works to eliminate trailer sway Acts as shock absorbers, taking the brunt of bumps and rough roads Reduces load on leaf spring assembly Extends the life of your trailer's suspension Designed to work with a suspension system that is in good working order 2 Jounce-style springs, line relocation bracket, mounting brackets and hardware are included Maintenance-free - no tubing to run or air pressure to monitor like with air springs Simple, no-drill installation Made in the USA Specs: Application: 3,000-lb to 5,000-lb single, overslung axle - springs sit over axle For tandem axle applications, use 2 kits Capacity: 500 lbs at 50 percent compression Do not exceed the trailer's weight-carrying capacity Spring dimensions: 5" tall x 4" diameter Compresses up to 70 percent of original height with full memory rebound Required clearance between top of spring plate and bottom of trailer frame: 5-5/16" - 6-1/2" Limited lifetime warranty 30-Day satisfaction guarantee Note: Does not work with spring plates wider than 4-1/4".
  • Leaf Spring Enhancement System
  • Boat Trailer
  • Snowmobile Trailer
  • Camper
  • Car Hauler
  • Utility Trailer
  • 5000 lbs
  • 3000 lbs
  • 4000 lbs
  • Single Axle
  • SuperSprings Intl

SumoSprings Trailer Helper Springs w/ Line Relocation Bracket - Single Axle - 3K to 5K - Underslung

Our Price: $299.99
In Stock
Improves suspension, handling and safety. Progressive spring rate. Provides additional support as needed so you always have a smooth, comfortable ride.Features: Improves suspension, handling and safety Provides additional support as needed so you always have a smooth, comfortable ride Allows the leaf spring ample movement while cushioning light loads Becomes more rigid as more weight is added Increases stability, providing great performance while hauling heavy loads Raises trailer ride height Works independently side-to-side Helps compensate for off-center loads Reduces body roll when swerving and turning corners Works to eliminate trailer sway Acts as shock absorbers, taking the brunt of bumps and rough roads Reduces load on leaf spring assembly Extends the life of your trailer's suspension Designed to work with a suspension system that is in good working order 2 Jounce-style springs, line relocation bracket, mounting brackets and hardware are included Maintenance-free - no tubing to run or air pressure to monitor like with air springs Simple, no-drill installation Made in the USA Specs: Application: 3,000-lb to 5,000-lb single, underslung axle - springs sit under axle For tandem axle applications, use 2 kits Fits 1-3/4" wide spring packs Capacity: 500 lbs at 50 percent compression Do not exceed the trailer's weight-carrying capacity Spring dimensions: 4" tall x 4" diameter Compresses up to 70 percent of original height with full memory rebound Required clearance between top of spring pack and bottom of trailer frame: 6" - 8-5/8" Limited lifetime warranty 30-Day satisfaction guarantee
  • Leaf Spring Enhancement System
  • Car Hauler
  • Boat Trailer
  • Camper
  • Snowmobile Trailer
  • Utility Trailer
  • 5000 lbs
  • 3000 lbs
  • 4000 lbs
  • Single Axle
  • SuperSprings Intl

Spring-Eye Bolt with Locknut for Slipper Springs - 3-3/4" Long

Our Price: $17.10
In Stock
9/16" Diameter spring-retainer bolt is used to mount slipper spring inside front hanger. Includes locknut.Features: Suspension bolt attaches leaf spring to front hanger Included locknut secures in place on bolt Specs: Diameter: 9/16" Head size: 13/16" Length: Overall: 3-3/4" Under the head: 3-1/2"
  • Suspension Bolts
  • Utility Trailer
  • Car Hauler
  • Camper
  • 3-1/2 Inch Long
  • ABS Fasteners

SumoSprings Trailer Helper Springs w/ Line Relocation Bracket - Single Axle - 5K to 8K - Underslung

Our Price: $320.99
In Stock
Improves suspension, handling and safety. Progressive spring rate. Provides additional support as needed so you always have a smooth, comfortable ride.Features: Improves suspension, handling and safety Provides additional support as needed so you always have a smooth, comfortable ride Allows the leaf spring ample movement while cushioning light loads Becomes more rigid as more weight is added Increases stability, providing great performance while hauling heavy loads Raises trailer ride height Works independently side-to-side Helps compensate for off-center loads Reduces body roll when swerving and turning corners Works to eliminate trailer sway Acts as shock absorbers, taking the brunt of bumps and rough roads Reduces load on leaf spring assembly Extends the life of your trailer's suspension Designed to work with a suspension system that is in good working order 2 Jounce-style springs, line relocation bracket, mounting brackets and hardware are included Maintenance-free - no tubing to run or air pressure to monitor like with air springs Simple, no-drill installation Made in the USA Specs: Application: 5,000-lb to 8,000-lb single, underslung axle - springs sit under axle For tandem axle applications, use 2 kits Fits 1-3/4" wide spring packs Capacity: 900 lbs at 50 percent compression Do not exceed the trailer's weight-carrying capacity Spring dimensions: 5" tall x 4" diameter Compresses up to 65 percent of original height with full memory rebound Required clearance between top of spring plate and bottom of trailer frame: 7-7/16" - 8-5/8" Limited lifetime warranty 30-Day satisfaction guarantee
  • Leaf Spring Enhancement System
  • Boat Trailer
  • Camper
  • Car Hauler
  • Snowmobile Trailer
  • Utility Trailer
  • 5000 lbs
  • 6000 lbs
  • 8000 lbs
  • 7000 lbs
  • Single Axle
  • SuperSprings Intl

Dexter 3/4" x 4-1/2" Spring Eye Bolt for 10K General Duty Slipper Springs

Our Price: $22.98
In Stock
Keep your Dexter 10K slipper suspension tight with this 3/4" x 4-1/2" spring eye bolt. Sized for rubber bushed 10K general duty springs, it installs with the 6-113 locknut and HAP-258-03 equalizer kit.Features: Replaces a worn or damaged spring eye bolt on your Dexter 10K general duty slipper spring suspension 3/4" Diameter bolt is sized for Dexter springs with rubber bushings to keep the spring eye tight and supported Measures 4-1/2 inches long so it fits standard Dexter hangers and equalizers without excess bolt length 3/4"-10 Threaded end works with Dexter 6-113 locknut (sold separately) for a secure, long lasting clamp Compatible with HAP-258-03 Dexter tandem axle equalizer kit (sold separately) for 2-1/2 inch slipper springs
  • Suspension Bolts
  • Car Hauler
  • Camper
  • Utility Trailer
  • 4-1/2 Inch Long
  • Dexter

Hayes Spring Eye Bushing for 10k Springs

Retail: $35.61
Our Price: $33.35
In Stock
Features: For use with 10,000-lb leaf springs Inside diameter: 0.773" Outside diameter: 1.785" Length: 2.75" Quantity: 1 bushing
  • Bushings
  • Snowmobile Trailer
  • Camper
  • Utility Trailer
  • Boat Trailer
  • Car Hauler
  • 2-3/4 Inch Long
  • Redline

Spring-Eye Bolt with Locknut for Slipper Springs - 5-1/2" Long

Our Price: $29.87
In Stock
1" Diameter spring-retainer bolt attaches slipper spring to front hanger or equalizer on trailers with 10,000-lb, 12,000-lb or 15,000-lb Dexter axles. ...
Features: Suspension bolt attaches leaf spring to front hanger or equalizer Included locknut secures in place on bolt Specs: Diameter: 1" Threads per inch: 8 Length: 5-1/2" Grade: 5
  • Suspension Bolts
  • Car Hauler
  • Utility Trailer
  • Camper
  • 5-1/2 Inch Long
  • Redline

Spring-Eye Bolt for Slipper Springs - 6" Long - Qty 1

Our Price: $27.04
In Stock
1-1/8" Diameter spring-retainer bolt attaches slipper spring to front hanger or equalizer. Locknut sold separately.Features: Suspension bolt attaches leaf spring to front hanger or equalizer Works with 10,000-lb, 12,000-lb, or 15,000-lb Dexter axle equalizers Locknut (6-72 - sold separately) secures in place on bolt Specs: Diameter: 1-1/8" Threads per inch: 7 Length: 6" Grade: 5
  • Suspension Bolts
  • Camper
  • Utility Trailer
  • Car Hauler
  • 6 Inch Long
  • Redline

Spring-Eye Bolt with Locknut for Slipper Springs - 4" Long

Our Price: $10.24
In Stock
5/8" Diameter spring-retainer bolt attaches slipper spring to front hanger or equalizer. Includes locknut.Features: Suspension bolt attaches leaf spring to front hanger or equalizer Works with 6-Leaf Slipper Spring for 9,000-lb Trailer Axles (72-10-2) Included locknut secures in place on bolt Specs: Diameter: 5/8" Threads per inch: 11 Length: 4" Grade: 5
  • Suspension Bolts
  • Car Hauler
  • Camper
  • Boat Trailer
  • Snowmobile Trailer
  • Utility Trailer
  • 4 Inch Long
  • Redline

Spring Keeper Bolt with Locknut for Slipper Springs - 3-1/4" Long

Our Price: $7.43
In Stock
5/16" Diameter spring-retainer bolt is used to mount slipper spring inside rear hanger. Includes locknut.Features: Suspension bolt attaches leaf spring to rear hanger Slipper spring slides into hanger and rests on bolt Included locknut secures in place on bolt Specs: Diameter: 5/16" Threads per inch: 18 Length: 3-1/4" Grade: 2
  • Suspension Bolts
  • Snowmobile Trailer
  • Boat Trailer
  • Camper
  • Car Hauler
  • Utility Trailer
  • 3-1/4 Inch Long
  • Redline

Spring Keeper Bolt for Slipper Springs - 4-1/2" Long - Qty 1

Our Price: $4.72
In Stock
1/2" Diameter spring-retainer bolt is used to mount slipper spring inside rear hanger. Locknut sold separately.Features: Suspension bolt attaches leaf spring to rear hanger Slipper spring slides into hanger and rests on bolt Locknut (12N-Z - sold separately) secures in place on bolt Specs: Diameter: 1/2" Threads per inch: 20 Length: 4-1/2" Grade: 2
  • Suspension Bolts
  • Car Hauler
  • Camper
  • Utility Trailer
  • 4-1/2 Inch Long
  • Redline

Spring-Eye Bolt for Slipper Springs - 5-1/2" Long

Our Price: $10.10
In Stock
1" Diameter spring-retainer bolt attaches slipper spring to front hanger or equalizer on trailers with 10,000-lb, 12,000-lb or 15,000-lb Dexter axles. ...
Features: Suspension bolt attaches leaf spring to front hanger or equalizer Locknut (6-112; sold separately) secures in place on bolt Specs: Diameter: 1" Threads per inch: 8 Length: 5-1/2" Grade: 5
  • Suspension Bolts
  • Utility Trailer
  • Camper
  • Car Hauler
  • 5-1/2 Inch Long
  • Redline

Spring-Eye Bolt for Slipper Springs - 4" Long

Our Price: $4.58
In Stock
5/8" Diameter spring-retainer bolt attaches slipper spring to front hanger or equalizer. Locknut sold separately.Features: Suspension bolt attaches leaf spring to front hanger or equalizer Works with 6-Leaf Slipper Spring for 9,000-lb Trailer Axles (72-10-2) Locknut (6-38; sold separately) secures in place on bolt Specs: Diameter: 5/8" Threads per inch: 11 Length: 4" Grade: 5
  • Suspension Bolts
  • Utility Trailer
  • Camper
  • Car Hauler
  • 4 Inch Long
  • Redline

Spring Keeper Bolt for Slipper Springs - 3-1/4" Long

Our Price: $1.71
In Stock
5/16" Diameter spring-retainer bolt is used to mount slipper spring inside rear hanger. Locknut sold separately.Features: Suspension bolt attaches leaf spring to rear hanger Slipper spring slides into hanger and rests on bolt Locknut (6-11; sold separately) secures in place on bolt Specs: Diameter: 5/16" Threads per inch: 18 Length: 3-1/4" Grade: 2
  • Suspension Bolts
  • Camper
  • Utility Trailer
  • Car Hauler
  • 3-1/4 Inch Long
  • Redline

4-Leaf Double-Eye Spring for 3,500-lb Trailer Axles - 25-1/4" Long

Our Price: $58.80
In Stock
Double-eye leaf spring acts as part of a trailer's suspension system by providing an attachment point for a 3,500-lb axle. Spring flexes to resist shock and also ensures a smooth ride. ...
Double-eye leaf springs attach to hangers that are welded onto your trailer. One end of this spring will attach directly to the hanger with a suspension bolt.
  • Double Eye Springs
  • 9/16 Inch Eye
  • 1-3/4 Inch Wide
  • 25-1/4 Inch Long
  • 3500 lbs
  • Standard Grade
  • etrailer
  • Nylon Bushings

Suspension Kit for Tandem-Axle Trailers - 1-3/4" Wide Double Eye Springs - 2-1/4" Links

Retail: $84.73
Our Price: $80.19
In Stock
Suspension kit includes equalizers and hardware for attaching 4 leaf springs to the hangers on your trailer's frame. Works with 33" axle spacing.Features: Suspension kit lets you attach 4 leaf springs (sold separately) to your trailer frame Works with 1-3/4" wide double-eye springs Hangers sold separately Equalizers transfer load and impacts from one axle to another by permitting movement between the axles Springs attach to ends of equalizers with included hardware Bolts secure equalizers and springs to the hangers on your trailer Shackle link assemblies with bolts secure springs to equalizers Kit includes: 2 Equalizers 8 Shackle straps 14 Bolts with locknuts Specs: Application: tandem-axle trailer with 1-3/4" wide double-eye springs Axle spacing: 33" Equalizer dimensions: Distance between outer shackle bolt holes (center on center): 5-3/4" Distance between hanger bolt hole and shackle bolt hole (center on center): 2-7/8" Height of side bolt hole to hanger bolt hole: 2" Shackle strap length: 2-1/4" from center hole to center hole Bolt dimensions: 3" long x 9/16" diameter Note: Locknuts are tapered to prevent vibrational loosening.
  • Standard Equalizer
  • Car Hauler
  • Utility Trailer
  • Camper
  • Double Eye Springs
  • 5-3/4 Inch Long
  • Tandem Axle
  • etrailer