Volunteer Sintered Products delivers custom powder metal solutions that go beyond raw components. From precision sintered gears and high-density structural parts to complete subassemblies ready for your production line, we manufacture the exact parts your application demands. Backed by 45+ years of powder metallurgy expertise, ISO 9001:2015 certification, and an in-house testing lab, every component we ship is production-validated and built to perform.
Most powder metal manufacturers hand you a component and leave the rest to you. At VSP, we deliver complete, production-ready solutions from initial material formulation through compaction, sintering, secondary machining, brazing, assembly, and final inspection. Everything happens under one roof with one engineering team accountable for the result.
This vertically integrated approach means fewer vendor handoffs, shorter lead times, and consistent part quality across every production run. Whether you need a single prototype or millions of units per year, our powder metal solutions are scaled to match your requirements.
Automotive applications account for approximately 69% of our production volume, and we’ve spent over four decades refining the powder metallurgy processes that automotive OEMs and tier-one suppliers depend on. Our sintered components deliver the dimensional precision, material consistency, and wear resistance that modern powertrain, transmission, and drivetrain systems require.
We produce parts for both conventional internal combustion platforms and next-generation electric vehicle systems, including soft magnetic composite (SMC) components for high-efficiency electric motors. Every automotive component we manufacture meets or exceeds the tolerances and quality standards demanded by brands like Nissan, Toyota, and Subaru.
Sintered gears, bushings, and cam followers for engine and transmission systems
Fuel-pump rotors and oil transfer pump components
Transmission plates, sprockets, and differential assemblies
VVT/VCT and variable vane pump components
Steering and braking system parts
Soft magnetic composites for EV motor applications
Off-road and powersports applications push components to their limits, with high RPM, shock loading, extreme vibration, and constant exposure to dirt, water, and temperature swings. Our powder metal solutions for ATVs, UTVs, snowmobiles, and off-road vehicles are engineered to handle exactly these conditions.
By combining high-density sintered alloys with precision secondary machining, we produce drivetrain and chassis components that maintain dimensional stability and mechanical performance across thousands of hours of hard use. For electric powersports platforms, our soft magnetic composite (SMC) capabilities enable lighter, more efficient motor designs.
Founded in 1981, VSP is a global provider of custom-engineered powdered metal (PM). Since starting in Lafayette, TN, VSP continuous pursuit of new technologies and capabilities has led to a growing global footprint. VSP has grown its manufacturing operations throughout the Eastern part of the United States and continues to expand in and outside of the country.
VSP is headquartered in the northeast of Middle TN, where the offices for its senior management, staff, and technical center are located.
Since 1981, VSP has won numerous awards, both locally and nationally, for its innovation, powder metal products, and next level partnerships.
Collaborate with our expert engineers to enhance your off-highway and agriculture equipment with durable components. Our solutions provide increased reliability and longevity, reducing downtime and maintenance costs.
Transmission Clutch Rings, Large Finished Mechanical Components
Large Precision Finished Spur Gears and Gerotors for Engine, Transmission, and Final Drive Lubrication
High-pressure Sealed Components for Fluid, Vacuum, and Air
Finished Oil and Fuel Transfer Pump Components
Steering Vane Pump and Braking Components
ABS Components
Differential Components
Steering Vane Pumps
Braking Components
& More
Steering Components
Variable Vane Pump
VVT/VCT Components
Sprockets
Assembled Camshafts
Transmission Gears
Seating Components
Differential Components
& More
Drivetrain Components
Transmission Gears & Sprockets
Differential Components
Shock & Suspension Mounts
Frame & Chassis Brackets
Brake System Components
Electric Motor Soft Magnetic Composites (SMCs)
Winch Mounting Brackets
& More
VSP provides custom powder metal solutions tailored for outdoor power equipment and lawn and garden applications, delivering unmatched engineering expertise. Our solutions improve product durability and user satisfaction.
Clutch Components
Blade Adapters
Linkages
Steering Components
Self-Propelled Applications
& More
Our sintered metal manufacturing process combines precision engineering with advanced technology to produce components that meet exact performance standards.
Review Existing Application For Issues Or Risks
Perform failure analysis, or material analysis where required
Recommend material & final geometry options
Collaborate on design modifications
Prototype and Testing
When you source powder metal solutions from VSP, you’re not just buying components; you’re getting a manufacturing partner who takes ownership of quality from the first powder blend to final shipment. Here’s why leading OEMs choose us.
Powder blending, compaction, sintering, machining, brazing, assembly, and inspection all under one roof. No subcontractors, no split supply chains. You get one point of contact, one quality system, and one team accountable for every part that ships.
Our two-shift operation runs compacting presses from 5 to 200 tons, sizing presses from 10 to 60 tons, and assembly presses from 1 to 8 tons. Whether you need a short prototype run or millions of units annually, we have the press capacity and floor space to meet your production schedule.
ISO 9001:2015 certified with annual third-party audits. Our on-site lab runs CMM verification, Keyence 3D scanning, hardness and density testing, torque and run-out measurement, pressure and leak testing, and metallurgical microscopy on every production lot. Kaizen events and weekly internal audits drive our zero-defect production culture.
Our Lafayette, Tennessee location provides 1–2 day ground shipping to major automotive and industrial centers across the Eastern United States. In-house tooling, CQI-9 real-time furnace monitoring, and vertical integration mean we ship faster without compromising on process control.
As a second-generation family-owned company, our leadership is directly involved in customer projects. No layers of corporate bureaucracy between you and the people who run your production, just fast decisions, responsive communication, and a team that treats your deadlines as their own.
We manufacture a wide range of sintered metal components, including precision gears, sprockets, gerotors, bushings, cam followers, fuel-pump rotors, transmission plates, clutch segments, valve cartridges, piston guides, structural spacers, locking collars, and complete brazed subassemblies. Parts are produced in iron, stainless steel, brass, and bronze formulations, with custom alloy blends available for specialized applications.
We support production volumes from short prototype runs to multi-million unit annual programs. Our facility operates two production shifts with compacting presses ranging from 5 to 200 tons, giving us the capacity and flexibility to scale with your demand. Whether you need 100 parts for validation or 3 million parts per year for serial production, our systems are built to deliver consistent quality at volume.
Yes. Conversion engineering is a core part of our solutions offering. We evaluate your existing machined, stamped, forged, or cast components and determine whether re-engineering them as sintered metal parts can reduce cost, improve consistency, or simplify your supply chain. Many conversion projects result in 20–40% lower per-unit costs while maintaining or improving mechanical performance.
Powder metallurgy produces near-net-shape parts, which means components come out of the compaction press very close to their final dimensions. This reduces or eliminates secondary machining, cuts material waste to under 5%, and enables complex geometries that would be costly or impossible to achieve with casting or machining. For medium to high production volumes, the per-unit economics of powder metal are typically significantly better than competing processes.
We hold ISO 9001:2015 certification, audited annually by a third-party registrar. Our quality system includes in-process SPC monitoring, first-article inspection, lot traceability, and a comprehensive on-site testing lab equipped with CMM, Keyence 3D scanning, hardness/density testing, torque and run-out measurement, pressure/leak testing, and metallurgical microscopy. We also run weekly internal audits and Kaizen events as part of our continuous improvement program.
