Ridewell RCA-215MM Mid-Mount Truck Air Ride Lift Axle Suspension - Non-Steerable - 22,500 lb Capacity - 2150204

Ridewell RCA-215MM is a non-steerable, liftable auxiliary axle air suspension for truck applications. The mid-mount configuration supports a 22,500 lb suspension rating and provides multiple ride height options using spacer kits for ride height optimization.

Key Features

• Non-steerable lift-axle operation guidance to reduce tire scrub and tire wear when raised during cornering
• Mid-mount air ride / air lift auxiliary suspension configuration for truck applications
• Ride height optimization using optional 1" and 2" spacer kits (sold separately)
• Axle alignment procedure using adjuster plate and alignment washer
• Axle seat for 5.000" diameter straight axle integration
• Optional shock mounting kits available (sold separately)

Technical Specifications

Torque Specifications

Ride Height / Travel

Included Components (Bill of Materials)

Installation Notes

• Axle alignment should follow SAE or TMC recommended standards; use 1/2" drive breaker bar to rotate the adjuster plate into the direction of desired axle movement.
• Ensure the adjustment plate and alignment washer are properly seated and aligned; the adjustment plate must sit flat against the hanger.
• No welding of adjuster plates or alignment washers to the hanger sidewalls is required or recommended.
• Retorque fasteners after 6,000 miles.
• Torque pivot bolt using a 1" drive impact wrench and Torx socket (for the pivot bolt); install until the head shears off (do not reuse pivot hardware).
• Weld in accordance with Ridewell weld procedure No. 1.
• Bushing (Item 23) can be installed using bushing installation tool No. 6100044.
• Mounting center dimensions vary with frame width; reference chart B-B for the correct dimensions.
• This orientation requires service chamber only; verify frame clearance.

Maintenance Notes

• Daily/pre-trip: check tires for inflation/damage, wheel ends for lubricant leakage/missing components, axle assemblies for damage/loose components, and suspension structure for damage/excessive wear; check air controls and drain moisture from air reservoirs.
• First 6,000 miles: torque components to specifications and verify the suspension is operating at the designed ride height (do not re-torque shear-type pivot bolt).
• Every 12,000 miles: inspect air springs for damage/excessive wear, torque components to specifications, check air lines/connections for leaks, and lubricate brake cams and slack adjusters.
• First 50,000 miles: torque suspension components to specifications and check wheel ends for excessive play (do not re-torque shear-type pivot bolt).
• Annually/100,000 miles: inspect pivot connections for worn bushings and replace as necessary; torque pivot hardware and component bolts/nuts to specifications; check hanger and air spring mounting plate connections to vehicle frame; check wheel end lubrication level and check air system for leaks.
• Pivot bushing inspection procedure: insert the flat end of a pry-bar between the hanger sidewall and wear washers, move back-and-forth and look for excessive beam movement; inspect wear washers for excessive wear/damage; repeat on the other side and drop beams for further inspection if large/easy movement or damaged wear washers are observed.

Warranty Notes

• Warranty terms and coverage apply only to the United States and Canada.
• Ridewell warrants suspension systems to be free of defects in material and workmanship when properly installed, maintained, and operated within rated capacity and recommended application.
• Warranty responsibility is limited to repair/replacement of suspension parts; purchased components are limited to the original manufacturer warranty.
• All work under warranty requires prior written approval; parts may require an RMA and must be returned with transportation charges prepaid (reimbursed if approved).
• This warranty is non-transferable and is in lieu of other expressed or implied warranties; Ridewell disclaims liability for special, indirect, incidental, or consequential damages.

Add-On Products (Sold Separately)

• 1" Spacer Kit (Carton of Parts): 6040167
• 2" Spacer Kit (Carton of Parts): 6040168
• Bushing Replacement Kit (Snap Off Bolt): 6040128
• Bushing Replacement Kit (Traditional Bolt): 6040078
• Shock Mounting Kit: 6030105
• Air Tank Integration Kit options (vary by configuration): 1200250 / 1200290 / 1200264; Quick Exhaust (QE) Valve Kit: 1200281