Rubicon Express
Rubicon Express RXJ503B Rubicon Monotube Yj Front
- SKU:
- 21405671
- MPN:
- rxj503b
- Availability:
- Usually ships the same or next business day. In stock at our PA warehouse.
- Shipping:
- Calculated at Checkout
- Stock Update:
- 05/09/2026 10:06:13 PM PST
- Stock Update:
- 05/09/2026 10:06:13 PM PST
Description
This item is brand-new, factory sealed.
Rubicon Express RXJ503B Shock Absorber- Calibrated and tested for specific vehicle: Ensures optimal performance
- Provides excellent heat dissipation: Prolongs shock absorber life
- 46mm digressive piston: Offers responsive control
- 14mm nitro steel piston rods: Provides strength and durability
- Robotic welds for greater consistency/strength: Enhances product reliability
- Limited lifetime warranty: Secures customer investment
- Manufactured in the USA: Assures quality and craftsmanship
- Brand: ?Rubicon Express
- Auto Part Position: ?Lower
- Style: ?Basic,Compression
- Vehicle Service Type: ?Truck
- Exterior Finish: ?Black
- Material: ?Aluminum
- Extended Length: ?29.1 Inches
- Global Trade Identification Number: ?00614901451672
- UPC: ?614901451672
- Manufacturer: ?Rubicon Express
- Item Weight: ?6 pounds
- Product Dimensions: ?36 x 4 x 4 inches
- Item model number: ?RXJ503B
- Manufacturer Part Number: ?RXJ503B
The basic purpose of a shock is to work with the spring when the vehicle's suspension is under compression to resist the compressive force of a bump, and then to work against the spring during rebound to prevent the spring from delivering its compressed potential energy to the wheel and causing the vehicle to bounce. With the correct spring rates and compression valving, the vehicle will absorb the bump with a minimum of deflection to the chassis. Then with the correct rebound valving, the suspension will return to ride height with a minimum excursion beyond ride height. Assuming correct spring rates, too much compression valving will create a harsh ride and too little will result in abused bumpstops. Too much rebound valving will cause the suspension to react too slowly and not return to ride height in time for the next bump, too little and the vehicle will bounce. When you add the variables of speed, varying size of bumps (amplitude), distance between the bumps (frequency), and a myriad of chassis tuning objectives and hurdles, shock tuning becomes the most difficult and single most important component of suspension tuning. Changes in vehicle weight (people, baggage, fuel) varying on-road and off-road terrain (smooth highway, twisty mountain roads, bad pavement, fire roads, washboard, etc.) make tuning a shock and spring package very difficult.
Attention California Residents (Pro? 65):
This product can expose you to chemicals Chromium (hexavalent compounds), which is (are) known to the State of California to cause birth defects or other reproductive harm.
Warranty Information