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On-Demand CNC Platform

CNC Machined
Suspension
Components

We machine control arms, knuckles, spindles, strut mounts, sway bar links, and subframes from aluminum 7075-T6 and 4340 steel. Lightweight, stiff, and machined to your exact geometry.

Securely upload your 3D CAD file for immediate pricing and DFM feedback.

$42B+
US automotive suspension
component market
Grand View 2024
7075-T6
Primary aluminum
for race suspension
Industry standard
±0.001"
Standard tolerances
on suspension parts
RivCut capability
5-Day
Typical prototype
turnaround
Standard lead time

Precision Suspension Components from Billet

Suspension parts demand precise ball joint bores, stiff lightweight geometry, and repeatable quality. A control arm with a bushing pocket that is off by 0.003" creates alignment issues that ruin tire wear and handling. We machine aluminum 7075-T6, 6061-T6, and 4340 steel to tolerances as tight as ±0.0005". Every part is CMM inspected.

1

Lightweight Materials

We machine aluminum 7075-T6 for maximum strength-to-weight ratio. 6061-T6 for cost-effective builds. 4340 steel for high-load racing applications.

2

Ball Joint & Bushing Precision

We hold ±0.0005" on ball joint bores and bushing pockets. Press-fit tolerances verified on CMM for perfect suspension geometry.

3

5-Axis Capability

Complex knuckle and upright geometries machined on 5-axis mills. No compromise on wall thickness or weight reduction pockets.

Suspension Components We Produce

Control arms, knuckles, spindles, and more from billet stock.

Control Arms

Billet aluminum control arms from 7075-T6 with precise ball joint bore tolerances, bushing pockets, and bolt hole patterns. Lightweight with optimized geometry for stiffness.

7075-T6 aluminum

Knuckles & Uprights

Billet uprights and steering knuckles for racing and performance builds. 5-axis machined from 7075-T6 with bearing bores, caliper mounting, and steering arm features.

5-axis machined

Spindles

High-strength spindles turned and milled from 4340 steel and 7075-T6 aluminum. Tight bearing journal diameters, splined hubs, and brake mounting surfaces.

4340 steel & aluminum

Strut Mounts & Camber Plates

Billet aluminum strut mounts and adjustable camber plates with precise slot geometry, bearing pockets, and bolt patterns for coilover integration.

Adjustable geometry

Sway Bar Links & End Links

Billet sway bar end links, adjustable links, and mounting brackets from 6061-T6 aluminum and 4130 chromoly. Heim joint bores and threaded sections to spec.

Adjustable length

Subframes & Crossmembers

Billet and fabricated subframe components with CNC-machined mounting points, bushing pockets, and alignment dowels. Steel and aluminum for street and race builds.

Precision mount points

Serving Suspension Builders Nationwide

The US automotive suspension market spans OEM platforms, professional racing, and a massive aftermarket of performance shops building custom setups.

From FSAE competition knuckles to production control arms for major OEMs, every suspension build depends on parts machined to precise geometry with zero compromise.

Whether you are building race suspension or developing next-gen production components, we want to be your machining partner. Instant AI pricing the moment you upload.

Tesla & EV Platforms

Next-gen EV suspension designs demand lightweight billet components with precise geometry for optimal handling and ride quality.

Aftermarket Suspension Industry

Companies like KW, Ohlins, and hundreds of custom suspension builders rely on CNC machine shops for billet knuckles, mounts, and arms.

Professional Motorsport

NASCAR, IMSA, and Formula SAE teams need billet suspension components machined to tight tolerances from aerospace-grade aluminum.

OEM Tier 1 Suppliers

Major suspension component suppliers need prototype and short-run production machining for new vehicle platform development.

Built for Suspension Engineers

Suspension parts need a shop that understands geometry and alignment tolerances.

Ball Joint Bore Precision

We hold ±0.0005" on ball joint bores and bushing pockets. Your suspension geometry is accurate from the first part.

5-Axis Capability

Complex knuckle and upright geometries need 5-axis machining. We run them without compromise on wall thickness or pocket depth.

Aerospace-Grade Aluminum

We source 7075-T6 with mill certs for maximum strength-to-weight ratio. Know exactly what is in your suspension parts.

Fast Prototype Turnaround

Track day is coming. Prototype suspension parts in 5 to 7 days so your testing schedule stays on track.

Certifications & Standards
In Progress
IATF 16949
Automotive quality management standard. We are building our QMS toward this certification. Documentation follows the structure now.
Active
NIST-Traceable Gauges
All measuring equipment calibrated to NIST standards on regular cycles. CMM, micrometers, and bore gauges.
Active
Material Certifications
Every order ships with mill certs and heat lot traceability. Full records for your audit trail.
Planned
PPAP
Production Part Approval Process documentation. On our roadmap for automotive OEM supplier requirements.

Questions about our quality setup? Email us — we will send our documentation package.

From CAD File to Suspension Part in 3 Steps

Simple process built for suspension engineers and race teams.

Step 1

Upload & Quote

Send your STEP or IGES file. Pick your material, quantity, and finish. Our AI gives you a real price right away. We also run a free DFM check and flag anything that could add cost.

Step 2

We Machine & Inspect

Your suspension parts run on our CNC mills and lathes. Every order gets CMM inspection on ball joint bores, bushing pockets, and bolt patterns.

Step 3

Ship with Full Docs

Parts ship with dimensional inspection reports, material certs, and any documentation your team needs. Carefully packaged to protect anodized finishes and bearing surfaces.

Suspension Parts Questions

We machine control arms, knuckles, spindles, strut mounts, sway bar links, and subframes. Upload your STEP or IGES file for instant AI pricing.
We machine aluminum 7075-T6 and 6061-T6 for lightweight control arms and knuckles. 4340 steel and 4130 chromoly for high-strength spindles and subframe components. 17-4 PH stainless for high-stress brackets.
Yes. We machine billet aluminum control arms from 7075-T6 with precise ball joint bore tolerances, bushing pockets, and bolt hole patterns. Single prototypes or short production runs.
We hold ±0.001" on general features and ±0.0005" on ball joint bores, bearing seats, and bushing pockets. Every part is CMM inspected before shipping.
Yes. We machine billet uprights and knuckles from aluminum 7075-T6 for FSAE, time attack, and professional racing. Lightweight, stiff, and machined to your exact geometry.
Most suspension prototypes ship in 5 to 7 business days. Rush orders on simpler brackets and links can ship in 3 to 4 days. Tell us your deadline.
Yes. We offer Type II anodize, Type III hard anodize, and bead blast finishes for suspension components. Hard anodize adds wear resistance on bearing seats and bushing bores.
Upload your STEP or IGES file at rivcut.com/quote. Select material, quantity, and finish. Our AI prices it instantly. For multi-component assemblies, email [email protected].

Suspension CNC Machining by City

We serve suspension builders in cities across the US.

Upload Your Suspension Part CAD File

Control arms, knuckles, spindles, strut mounts — we machine them all. Get instant AI pricing now. Prototypes ship in as few as 3 days.

No minimums · 100% Made in USA · Never brokered · Ships anywhere in the US

AI price estimates are usually within ±20% of final price. Complex parts may get a human review within one business day before pricing is confirmed.

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