Skip to content
🍂 Fall Savings: $10 – $100 off select equipment. Find your code on eligible product pages. Ends Nov 30.
🍂 Fall Savings: $10 – $100 off select equipment. Ends Nov 30.
SKEISO AH04 leg extension and curl attachment for the JXS-037C bench
SKEISO AH04 leg extension and curl attachment studio photo
SKEISO AH04 leg extension and curl attachment for the JXS-037C bench
SKEISO AH04 leg extension and curl attachment studio photo

AH04 Leg Extension & Curl Attachment for JXS-037C

by Skeiso Fitness
Save $20.00 Save $20.00
$159.99
$159.99 - $159.99
$159.99
$139.99
$139.99 - $139.99
$139.99
Limited lifetime frame warranty
In Stock · Estimated delivery in 7-10 business days
30-day returns with approval before shipping back. A 15% restocking fee and return freight apply if you change your mind. Damaged or defective? No restocking fee. See full Refund Policy.
American Express Apple Pay Diners Club Discover Google Pay Mastercard PayPal Shop Pay Visa

Pay over time with Shop Pay. Rates as low as 0% APR, subject to credit approval.

Questions? Call (208) 408-0645 · Mon–Fri, 9 AM–5 PM Pacific

The SKEISO AH04ASSY is a plate-loaded leg extension and leg curl attachment designed specifically for the JXS-037C adjustable weight bench. It is an add-on, not a standalone exercise machine.

Use the AH04 to add supported knee-extension and leg-curl movements to the same bench platform, expanding lower-body training without adding a separate leg machine to your workout space.

Why choose the AH04 attachment?

  • Adds plate-loaded leg extension and leg curl exercises.
  • Uses the compatible JXS-037C bench to reduce the footprint of a multi-station setup.
  • Provides clear model-specific compatibility instead of claiming universal bench fit.

Compatibility and ordering

The AH04ASSY is made for the SKEISO JXS-037C adjustable weight bench. This product includes the AH04 attachment only; the bench is sold separately. Review the specifications and FAQ below for verified dimensions, packing details and ordering guidance.

Shipping & Delivery
Free standard shipping to the contiguous United States. Estimated delivery is 7-10 business days (2-3 days to prepare your order plus 5-7 days in transit). Heavy equipment ships by freight on a pallet with liftgate delivery to the curb or driveway; inside delivery and assembly are not included. Please inspect your delivery and report visible damage within 24 hours, concealed damage within 72 hours, and missing parts within 7 days. See our Shipping Policy for full details.
Returns & Refunds
30-day returns from delivery, with written approval required before you ship anything back. Items must be unused, complete and in original packaging. A 15% restocking fee applies and you cover return freight if you change your mind; original outbound shipping is non-refundable. Defective, damaged or incorrect items have no restocking fee. See our Refund Policy for full details.
Secure Payments & Warranty

Structural steel frame and welds: limited lifetime. Cables, pulleys, bearings and guide rods: 5 years. Upholstery, accessories and other covered components: 1 year. Original purchaser only; proof of purchase required. Read the full Warranty Policy.

Your payment is secure. We never store your credit card information.

SKEISO AH04 leg extension and curl attachment for the JXS-037C bench

Add Leg Extensions and Curls to Your Bench

The AH04 is a plate-loaded leg extension and leg curl attachment that turns the JXS-037C bench into a lower-body station without a separate leg machine.

An Add-On, Not a Standalone Machine

This listing is the AH04 attachment only. The JXS-037C bench is sold separately, and weight plates are not included.

SKEISO AH04 leg extension and curl attachment studio photo

Pin-Selected Height Adjustment

The AH04 uses a pin-selected multi-position height adjustment so you can set the roller for your leg length and the exercise.

Sturdy Square-Tube Frame

It is built from 1.97 x 1.97 x 0.079 in square tube and weighs about 48.5 lb. Contact us for the current verified load rating before loading it heavily.

SKEISO AH04 leg extension and curl attachment on the JXS-037C bench

Made for the JXS-037C Bench

The AH04 is designed specifically for the SKEISO JXS-037C and is not advertised as a universal fit, so check compatibility before pairing it with any other bench.

Save With a Bench Package

If you do not own the bench yet, the JXS-037C is offered with the AH04 included as a package option.

Specifications

Attachment

Function Plate-loaded leg extension and leg curl
Compatible Bench SKEISO JXS-037C
Frame 1.97 x 1.97 x 0.079 in square tube
Adjustment Pin-selected multi-position height

Weight

Net Weight 48.5 lb (22 kg)
Gross Weight 56.2 lb (25.5 kg)
Package Size 26.8 x 23.6 x 16.1 in

What's Inside the Box

  • AH04 leg extension and curl attachment

Not included: the JXS-037C bench and weight plates.

Frequently Asked Questions

Does the AH04 work with any weight bench?

No. It is made for the SKEISO JXS-037C bench, and universal fit is not claimed.

Does it include the bench or weight plates?

No. This listing includes only the AH04 attachment. The bench and weight plates are separate.

What exercises does it add?

Plate-loaded leg extensions and leg curls.

Your payment is secure. We never store your credit card information.

SSL Secure Payment
Encrypted Checkout
Multiple Payment Methods
Expert Curated

Hand-picked machines vetted for quality and performance.

Warranty Backed

Every product covered by the manufacturer's original warranty.

Secure Checkout

Your data is protected with industry-leading encryption.

Price Match Guarantee

We'll match any lower online price, and beat it by $50 on products priced over $2,000.

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare
Free Shipping
Easy Returns
Price Match Guarantee