Menu
Menu
Your Cart
SELECT VEHICLE
SELECT VEHICLE
Bulldog 5K A‑Frame Sidewind Trailer Jack with 5K Collar‑Lok 2‑Inch Coupler Bundle
Bulldog 5K A‑Frame Sidewind Trailer Jack with 5K Collar‑Lok 2‑Inch Coupler Bundle
Bulldog 5K A‑Frame Sidewind Trailer Jack with 5K Collar‑Lok 2‑Inch Coupler Bundle
Bulldog 5K A‑Frame Sidewind Trailer Jack with 5K Collar‑Lok 2‑Inch Coupler Bundle
Bulldog 5K A‑Frame Sidewind Trailer Jack with 5K Collar‑Lok 2‑Inch Coupler Bundle
Bulldog 5K A‑Frame Sidewind Trailer Jack with 5K Collar‑Lok 2‑Inch Coupler Bundle
Bulldog 5K A‑Frame Sidewind Trailer Jack with 5K Collar‑Lok 2‑Inch Coupler Bundle
Bulldog 5K A‑Frame Sidewind Trailer Jack with 5K Collar‑Lok 2‑Inch Coupler Bundle
Bulldog 5K A‑Frame Sidewind Trailer Jack with 5K Collar‑Lok 2‑Inch Coupler Bundle

Bulldog 5K A-Frame Trailer Jack 15" Lift Sidewind w/ 5K Collar-Lok Coupler for 2" Ball

Model: BTJC145

Bulldog 5K A‑Frame Trailer Jack & 5K Collar‑Lok 2″ Coupler Bundle

Upgrade your trailer’s front‑end with this heavy‑duty Bulldog bundle. It pairs a 5,000 lb‑rated side‑wind A‑frame jack with Bulldog’s proven 5K Collar‑Lok™ coupler, giving you reliable lifting power and a secure, automatically tight ball fit—perfect for utility, cargo, livestock and construction trailers.

Bundle Contents:

  • QTY (1): Round Trailer Jack, A‑Frame, 5,000 lb Lift, Side‑wind, 15″ Travel
    • Industry‑standard Bulldog quality—trusted for 75+ years
    • 15″ travel with smooth, ergonomic side‑wind crank
    • 5,000 lb lift & static capacity for heavy tongue weights
    • Precision‑fitted parts add stability and long service life
    • Grey powder‑coat outer tube resists corrosion
    • Bolt‑on A‑frame mount; footplate or wheel sold separately
  • QTY (1): Bulldog Collar‑Lok™ A‑Frame Coupler, 2″ Ball, 5,000 lb Capacity
    • Automatic Collar‑Lok latch keeps a constant tight ball fit
    • 5,000 lb rating handles demanding static & dynamic loads
    • Hinged ball socket simplifies hook‑up
    • Clear visual indicator confirms full closure
    • Adjustable A‑frame mount for level towing
    • Ideal for utility, cargo, horse & construction trailers

Always verify your trailer’s original equipment ratings, perform regular lubrication and inspection, and tighten mounting hardware per manufacturer torque specs.

Specifications:  
Weight Capacity 3001 – 5000 lb
Jack Mounting Style A‑Frame Triangular Center Mount
Jack Group A‑Frame Style Trailers
Jack Style A‑Frame, Round Tube
Lift Mechanism Side‑wind Handle Crank
Travel Range 15″ Lift
Finish Gray Powder‑coat
Static Load Capacity 5,000 lb
Lifting Load Capacity 5,000 lb
Foot Type Foot or Wheel Option
Leg Style Fixed
Swivel Non‑Swivel
Outer Tube Diameter 2.25″
Bracket‑to‑Bottom (Retracted) 9″ (exact 8.60″)
Bracket‑to‑Bottom (Extended) 24″ (exact 23.60″)
Bracket‑to‑Top Clearance 13″ (exact 12.75″)
Electric Lift None (Manual)
Custom Bundle No
Inner Tube Diameter 2″
Order today or call us at 877‑869‑6690 for expert advice and personalized service.

$211 55 $274.40 23% OFF

  • Best Price on Web Guarantee
  • Fastest Shipping
  • FREE Shipping
  • In Stock
Best Price on Web Guarantee
Best Price on Web Guarantee

We match lower prices from major authorized retailers for brand-new products in original packaging, provided the item is in stock. The competing seller must be an authorized, professional retail business; offers from individuals, auctions, peer-to-peer sites, or unauthorized sellers don’t qualify. Used, refurbished, or open-box items are excluded.

Please see our full terms for details.

Applies to this product only

Applies to this product only

$274.40 $211 55

Pay in 4 interest-free installments of with Pay with Affirm Learn more

Questions? Call our Auto Experts at (877) 869-6690

Get it now, pay later

Select installments at checkout to split your purchase into 4 interest-free payments of $ every 2 weeks.

  • No fees, ever.
  • No impact on your credit score.

Payment options are offered by Affirm and are subject to an eligibility check and might not be available in all states. CA Residents: Loans by Affirm Loan Services, LLC are made or arranged pursuant to a California Finance Lender license.

Fits Vehicle Styles

Product Details

  • Brand: Bulldog
  • Model: BTJC145
  • Includes: A-Frame Jack,  Trailer Coupler

Bulldog 5K A‑Frame Trailer Jack & 5K Collar‑Lok 2″ Coupler Bundle

Upgrade your trailer’s front‑end with this heavy‑duty Bulldog bundle. It pairs a 5,000 lb‑rated side‑wind A‑frame jack with Bulldog’s proven 5K Collar‑Lok™ coupler, giving you reliable lifting power and a secure, automatically tight ball fit—perfect for utility, cargo, livestock and construction trailers.

Bundle Contents:

  • QTY (1): Round Trailer Jack, A‑Frame, 5,000 lb Lift, Side‑wind, 15″ Travel
    • Industry‑standard Bulldog quality—trusted for 75+ years
    • 15″ travel with smooth, ergonomic side‑wind crank
    • 5,000 lb lift & static capacity for heavy tongue weights
    • Precision‑fitted parts add stability and long service life
    • Grey powder‑coat outer tube resists corrosion
    • Bolt‑on A‑frame mount; footplate or wheel sold separately
  • QTY (1): Bulldog Collar‑Lok™ A‑Frame Coupler, 2″ Ball, 5,000 lb Capacity
    • Automatic Collar‑Lok latch keeps a constant tight ball fit
    • 5,000 lb rating handles demanding static & dynamic loads
    • Hinged ball socket simplifies hook‑up
    • Clear visual indicator confirms full closure
    • Adjustable A‑frame mount for level towing
    • Ideal for utility, cargo, horse & construction trailers

Always verify your trailer’s original equipment ratings, perform regular lubrication and inspection, and tighten mounting hardware per manufacturer torque specs.

Specifications:  
Weight Capacity 3001 – 5000 lb
Jack Mounting Style A‑Frame Triangular Center Mount
Jack Group A‑Frame Style Trailers
Jack Style A‑Frame, Round Tube
Lift Mechanism Side‑wind Handle Crank
Travel Range 15″ Lift
Finish Gray Powder‑coat
Static Load Capacity 5,000 lb
Lifting Load Capacity 5,000 lb
Foot Type Foot or Wheel Option
Leg Style Fixed
Swivel Non‑Swivel
Outer Tube Diameter 2.25″
Bracket‑to‑Bottom (Retracted) 9″ (exact 8.60″)
Bracket‑to‑Bottom (Extended) 24″ (exact 23.60″)
Bracket‑to‑Top Clearance 13″ (exact 12.75″)
Electric Lift None (Manual)
Custom Bundle No
Inner Tube Diameter 2″
Order today or call us at 877‑869‑6690 for expert advice and personalized service.

Be the first to ask a question.

Write a review

Note: HTML is not translated!
Rating
Bad Good

Get Expert Help