• Pair of black L-shaped mounting brackets with pins.
  • Two black L-shaped metal mounting brackets with pins.
  • Close-up of a PROX weight rack hook on a metal power rack.
  • Two black metal clamps standing on a concrete workshop floor.
  • Black metal power rack with barbell and weight plates in gym.
  • Barbell resting on a PRx squat rack with safety arms.

PRx Performance

PRx 2x3 Sandwich J-Cups

Sandwich J-cups for 2x3 racks · 4 lb · lifetime warranty

PX742

$115.99 USD
Low stock! Only 8 left

Ships from the manufacturer's US warehouse. Ships by parcel · ship date confirmed after you order 

Why buy from us: who we are, how an order works, and warranty and return help

Order Protection

Pay by card, digital wallet, or payment plan. Every purchase is protected by SSL encryption and PCI DSS-compliant security.

  • American Express
  • Apple Pay
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • USDC
  • Visa

At a Glance

  • Fits: Fits 2x3 racks
  • Capacity: 1,000 lb
  • Size: 10.5 × 2.5 × 10 in
  • Weight: 4 lb
  • Warranty: Lifetime (see terms)

Description

Specifications

Fit

Compatible with Fits 2x3 racks

Size & capacity

Weight capacity 1,000 lb (453.6 kg)
Dimensions (L × W × H) 10.5 × 2.5 × 10 in (26.7 × 6.4 × 25.4 cm)
Weight 4 lb (1.8 kg)

Construction

Material Steel; injection molded plastic; black powder coat
Finish Black powder coat

Compliance

Recommended age 16+

Identifiers

Model PX742
UPC 00810201941237

Shipping & Delivery

Ships fromThe manufacturer's US warehouse
MethodParcel
DeliveryParcel to your door
Ship dateConfirmed by email after you order

Warranty

Product Lifetime

Prx Warranty (PDF)

PRx Performance's warranty excludes orders that are ultimately transported to an international destination, Alaska or Hawaii (effective 10/01/26).

Resources

We don’t have manuals or documents listed for this product yet. Please contact us for more information.

Return Policy

30-Day Return Policy

Return new, unopened and unused items in their original packaging within 30 days of delivery. A 10% restocking fee applies to all returns, and you pay return shipping. Refunds go to your original payment method.

You can cancel within 24 hours of placing your order.

Read the full Refund Policy

Which is right for you?

Synergee J-Cups: Lists a 750 lb (340.2 kg) weight capacity
XMARK Viper Roller J-Cups: Stated compatibility with XMARK Viper Racks, if that is the rack you own

PRx 2x3 Sandwich J-Cups XMARK Viper Roller J-Cups
Price
$115.99 USD
$133.00 USD
Capacity
1,000 lb
Dimensions
10.5 × 2.5 × 10 in
Weight
4 lb
24 lb
Key spec
Compatible with: Fits 2x3 racks
Compatible with: XMARK Viper Racks
Warranty
Lifetime warranty
Lifetime mainframe; 2-year wearables

More Machine & Bench Attachments

All Machine & Bench Attachments (23)

What rack do these J-cups fit?

These are the 2x3 model — sandwich-style J-cups named for 2x3 in uprights. No other tube sizes or pin dimensions are listed in the specs.

How much do the PRx 2x3 Sandwich J-Cups weigh?

4 lb (1.8 kg).

What is the weight capacity of these J-cups?

No weight capacity is listed in this product's specs. If a stated rating matters to you, the Synergee J-Cups list one — see the comparison above.

What warranty comes with these J-cups?

A lifetime warranty on the product. The full PRx warranty document is linked on this page.

When will it ship?

It ships by parcel from the manufacturer's US warehouse. We send your order to the manufacturer right away and confirm the ship date with you.

Shipping & Delivery

View full policy

  • 1. Shipping & Tracking

    As soon as your label prints, you’ll get a “Shipment on the way” email with tracking and a Bill of Lading (for freight). Follow the link to watch each scan in real time.

  • 2. Delivery

    • Small packages: arrive at your door with no signature required.
    • Freight: the local terminal calls to book a curbside appointment. Be present to sign, inspect, and note any damage before the driver leaves.

  • 3. Inspection, Support & Setup

    Inspect every shipment before you sign for it and note any damage on the delivery receipt. If anything is missing or damaged, email photos and your order number to help@myfitnessoutlet.com within 48 hours of delivery, and we’ll work with the carrier and manufacturer on a replacement, repair or refund. If the item is returned, our standard return terms apply. Need it assembled? Assembly Services connects you with vetted local installers by ZIP code.