-0%
UMI Performance 3655-B black boxed rear lower control arms, also called trailing arms, for the 1965-1970 Chevrolet Impala, Bel Air, Biscayne and Caprice.
Click to zoom in

UMI Performance 1965-1970 Chevrolet B-Body Boxed Rear Lower Control Arms / Trailing Arms, Black

$ 379.99 $ 378.99
$ 378.99

UMI Performance 1965-1970 Chevrolet B-Body Boxed Rear Lower Control Arms / Trailing Arms, Black is UMI Performance manufacturer part number 3655-B, selected by the verified year, make, and model applications below. Upgrade your classic Chevrolet B-body with UMI control arms for improved performance and ride quality. These boxed control arms are a direct bolt-in replacement for factory stamped arms, providing greater durability and strength. The high quality polyurethane bushings reduce deflection, resulting in less body roll and increased traction. Made with 1/8" wall thickness USA rectangular tubing, these control arms are built to last. Proudly designed and manufactured in the USA, these control arms are an excellent choice for your restoration project, street car, or drag car. Upgrade your classic Chevrolet B-body with UMI control arms for a smoother ride and enhanced performance.

Key Features

  • Each arm is built from 1/8 inch wall USA rectangular tubing with greaseable polyurethane bushings in DOM bushing holders, reinforced sway bar holes and spring perches with clips that suit either factory or lowering springs.
  • They keep the stock length and stock geometry while removing the flex that the original pressed steel arms develop under load.
  • They are fixed length boxed arms that keep the factory geometry.
  • The arms are fixed at the factory length Material and style Mild steel, boxed Finish Powder coat, black on this part number Sides Both arms are identical and work on either side Mounting hardware Not included.
  • A Grade 8 hardware kit is offered separately by UMI Rear bolt reuse The rear bolt of the control arm is a factory shock bolt and must be reused.
  • UMI's hardware kit supplies a new nut for that stud only, not a new stud Recommended torque UMI publishes no torque figure for this part number.

Fitment

Years Make Model Application Notes
1965-1970 Chevrolet Bel Air Confirm every UMI Performance application note and factory configuration
1965-1970 Chevrolet Biscayne Confirm every UMI Performance application note and factory configuration
1965-1970 Chevrolet Caprice Confirm every UMI Performance application note and factory configuration
1965-1970 Chevrolet Impala Confirm every UMI Performance application note and factory configuration

Specifications

Brand UMI Performance
Manufacturer Part Number 3655-B
Product Type Control Arms
Application Type Vehicle Specific
Condition New

What's Included

One new UMI Performance control arms package identified by manufacturer part number 3655-B, plus only the hardware and accessories expressly shown or stated for this exact part number

About UMI Performance

UMI Performance designs and manufactures suspension, chassis, steering, and handling components for American performance vehicles in Philipsburg, Pennsylvania.

Related UMI Performance Products

Frequently Asked Questions

How do I confirm UMI Performance 3655-B is correct for my application?
Match the exact manufacturer part number, year, make, model, factory configuration, dimensions, connection points, and every current UMI Performance note.

Are similar UMI Performance parts interchangeable with 3655-B?
No. Mounting points, dimensions, adjustment range, material, finish, bushing style, and included hardware can differ between part numbers.

What should be checked after installing UMI Performance 3655-B?
Inspect fasteners, bushings, joints, clearances, alignment, ride height, and suspension movement after installation and again after the initial road test.

Installation

Follow the current UMI Performance instructions for manufacturer part number 3655-B. Confirm all torque values, mounting locations, bushings, joints, clearances, ride height, and alignment requirements. Professional installation and a post-installation alignment are recommended when the component changes suspension geometry.

Alignment Components

Alignment Components

Shop alignment components, camber kits, caster kits, and adjustable control arms at Black Ops Auto Works. Find vehicle-specific parts for correcting suspension alignment or preparing a performance setup, including toe links, adjustment cams, camber plates, and replacement mounts. Choose components based on your vehicle, suspension configuration, and measured alignment needs. Camber, Caster, and Toe Correction Camber describes the inward or outward tilt of a wheel when viewed from the front. Caster describes the steering axis angle when viewed from the side. Toe describes whether the wheels point inward or outward when viewed from above. Each measurement has a different role, so the right correction part depends on which angle needs adjustment. This collection includes options from Black Ops Auto Works, AAD Performance, SPC Performance, Eibach, SuperPro, Whiteline, and other suspension brands. Adjustment capability varies by product. A camber kit does not automatically provide caster...

View Alignment Components Products
Chevrolet Bel Air Parts and Accessories

Chevrolet Bel Air Parts and Accessories

Choose Chevrolet Bel Air parts by year, chassis and original or converted brakes. A complete disc upgrade needs a broader installation plan than replacing an existing rotor or pad. Brake Conversion and Wheel Clearance Confirm exact chassis, spindle, hub, axle and hydraulic requirements for a kit. Compare calipers, brackets, rotors, hoses and mounting pieces supplied. Check wheel clearance with the manufacturer’s template against the actual wheel design. Rotor diameter or caliper finish does not establish chassis and wheel compatibility. Original Hydraulics and Dampers Master and wheel cylinders require the actual hydraulic configuration, mounting and dimensions. Record disc conversions before choosing original-application service parts. Shocks need matching mounts, length and installed spring or ride-height coverage. Keep references for engine, brake and suspension changes with the restoration records. Choose Your Part Identify year, chassis and brake configuration. Confirm convers...

View Chevrolet Bel Air Parts and Accessories Products
Chevrolet Biscayne Parts and Accessories

Chevrolet Biscayne Parts and Accessories

Explore Chevrolet Biscayne parts by year, chassis and installed brake system. Restoration hydraulics and complete disc upgrades need their own dimensions and installation references. Disc Upgrade and Wheel Interfaces Confirm chassis, spindle, hub and axle coverage before choosing a brake kit. Review hydraulic requirements and calipers, brackets, rotors, hoses or hardware supplied. Use the manufacturer’s wheel-clearance template against the actual wheel design. Check stud or mounting interfaces independently of nominal rotor size. Hydraulic Service and Shock Mounts Wheel cylinders need correct bore, side, mounting and connections. A master cylinder must match the installed disc or drum hydraulic arrangement. Compare shocks by axle, mounts, length and current spring or ride-height setup. Keep conversion references so later brake and chassis service follows the actual assemblies. Choose Your Part Identify year and current brake configuration. Confirm kit spindle, hub and hydraulic cov...

View Chevrolet Biscayne Parts and Accessories Products
Chevrolet Caprice Parts and Accessories

Chevrolet Caprice Parts and Accessories

Find Chevrolet Caprice parts with the generation and body identified first. Window accessories for later cars, classic brake assemblies and electronic control accessories have different application requirements. Body and Brake Generations Match window deflectors to the exact doors, glass and installation method. A four-piece set should be checked for the windows covered rather than selected from the Caprice name alone. For brake service, identify the installed axle, rotor or drum dimensions and caliper. Keep conversion references where hubs, brakes or suspension have changed. Cab and Accelerator Interfaces Floor mats need measured contours, retention and clearance around the pedals and seats. Universal coverage does not establish a molded sedan or wagon floor fit. Pedal-response accessories need the actual accelerator connector and explicit vehicle coverage. Compare phone or display requirements separately; a response change does not establish additional engine horsepower. Choose Yo...

View Chevrolet Caprice Parts and Accessories Products
Chevrolet Imapala Parts and Accessories

Chevrolet Imapala Parts and Accessories

Find Chevrolet Impala parts with the generation, body and installed equipment identified. The Impala name spans different chassis, so brake, suspension and exterior purchases need a precise application. Generation and Installed Equipment Use model year, body and drivetrain records to identify the car. Keep Impala Limited applications separate when a product distinguishes that body from other Impala production. Record calipers, rotor or drum dimensions and axle before selecting brakes. Factory equipment or later conversions can change the correct pads, hydraulic pieces and hardware. Body, Suspension and Service Planning Exterior parts need matching doors, glass, panel shape and attachment. A shared Impala name does not establish body interchangeability across generations. Suspension parts should suit the installed mounts, ride height and equipment. Keep conversion references with engine and gearbox details when the car has been modified. Choose Your Part Identify Impala generation a...

View Chevrolet Imapala Parts and Accessories Products
Chevrolet Impala Parts and Accessories

Chevrolet Impala Parts and Accessories

Find Chevrolet Impala parts by generation, body and installed mechanical equipment. Build each purchase around the actual brake, suspension or body application rather than expecting one specification across the model’s history. Brakes and Chassis Service Identify the axle, caliper, rotor or drum dimensions and hydraulic equipment. Record any brake upgrade or axle replacement before choosing service components. Suspension selection needs the installed mounts, ride height and equipment. A modified car should retain references for springs, dampers and conversion hardware. Body Coverage and Model Distinctions Match exterior components to the actual panel, doors, glass and attachment. Production ranges and Limited designations can separate parts that share the Impala name. For engine or drivetrain work, identify installed engine and transmission rather than relying on a trim badge. Keep donor assembly and conversion records where the powertrain has changed. Choose Your Part Identify gen...

View Chevrolet Impala Parts and Accessories Products
Control Arms

Control Arms

Control arms for lifted trucks, SRT and Hellcat platforms, and off-road builds are stocked at Black Ops Auto Works. Shop tubular steel upper control arms, billet adjustable control arms, rear toe links, camber arm kits, and vehicle-specific control arm sets for Jeep Grand Cherokee and Trackhawk, Dodge Durango, Charger, Challenger, 300, and Magnum, Toyota 4Runner and FJ Cruiser, Lexus GX460 and GX470, Ford Mustang, and GM 1500 trucks. Every product is filterable by year, make, model, trim, and lift height so the correct control arm ships the first time. Black Ops Auto Works carries 789 control arm SKUs across upper, lower, adjustable, and toe link categories. What This Collection Covers Control arms connect the wheel hub and knuckle assembly to the vehicle frame and control wheel travel through compression and droop. Worn OEM control arms with loose ball joints or deteriorated bushings cause vague steering, uneven tire wear, and handling inconsistency. This collection covers arm ...

View Control Arms Products
Suspension

Suspension

Suspension parts and complete kits for cars, trucks, SUVs, Jeeps, and off-road builds are stocked at Black Ops Auto Works. Shop coilovers, lowering springs, lift kits, leveling kits, shocks and struts, sway bars, control arms, tie rods, ball joints, bushings, chassis bracing, alignment hardware, air suspension, and complete stage kits from Bilstein, KW, Ohlins, Fox, KING, ICON, BC Racing, Silvers, Eibach, H&R, Swift Springs, Whiteline, Energy Suspension, Moog, SPC Performance, Rough Country, ReadyLIFT, BDS, Skyjacker, Air Lift, Firestone, and Black Ops Auto Works. Start with a matched shock and spring package or a full coilover kit, then layer in sway bars, chassis bracing, and camber adjustment hardware. Every part is filterable by year, make, model, trim, and drivetrain to confirm fitment before ordering. What This Category Covers Suspension is the highest-leverage handling upgrade on any vehicle. A properly matched shock, spring, and sway bar package produces measurable i...

View Suspension Products
UMI Performance

UMI Performance

Shop UMI Performance suspension, chassis, steering, and handling components by exact manufacturer part number and verified vehicle application.UMI Performance Product Families Control arms, panhard bars, trailing arms, and suspension links Sway bars, end-link hardware, chassis braces, and subframes Coilovers, lowering springs, shocks, and suspension packages Crossmembers, engine mounts, driveshaft loops, and installation hardware Choose Your PartConfirm the exact manufacturer part number, year, make, model, factory equipment, mounting position, adjustment range, material, finish, bushing configuration, and every current manufacturer note. Confirm every engine, drivetrain, chassis and factory-equipment requirement in the product application notes.About UMI PerformanceUMI Performance designs and manufactures suspension and chassis components for American performance vehicles in Philipsburg, Pennsylvania.Related Collections UMI Performance products Control arms Sway bars Lowering sprin...

View UMI Performance Products
Military & First Responder Discounts

Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

Learn More & Apply

Your cart

×