IP Rings Ltd is fundamentally a precision-engineering house that makes the metal parts inside engines and transmissions - piston rings, gears, and crank pins - where a few microns of coating or a cleverer shape can decide whether a vehicle meets its emission norms or runs quietly for a decade. It was born in 1991 as a technical partnership with Nippon Piston Ring of Japan, which handed it the coating and design know-how that still runs through its factories today, and it has since expanded by buying the exhaust after-treatment business from its own joint venture and setting up a US subsidiary to sit closer to its North American customers. The recurring approach is to own a proprietary process - a specific way of coiling a ring, cold-forming a gear, or depositing a coating - that makes a component lighter, quieter or cleaner than the conventional alternative, and then to sell that advantage to original equipment manufacturers across every vehicle type from two-wheelers to heavy trucks. # Business segments Five engines at different stages - a cold-forging cash cow, a piston-ring franchise built on decades of Japanese coating technology, a small precision-parts line, a captive toolroom, and an exhaust-systems business just brought in-house - all feeding the same automotive OEM and Tier-1 supply chain. ## 1. Forgings and orbital cold forming: the company's biggest revenue engine **A proprietary cold-forming process turns out near-net-shape transmission gears that are lighter and quieter than conventionally forged parts, and North American Tier-1 customers keep ordering more of them.** - **The process is the differentiator** - Orbital Cold Forming (OCF) lets the company make intricate geometrical parts like differential gears and dog rings that would be difficult or uneconomical to produce through conventional forging, which is why demand has grown alongside tightening NVH (Noise, Vibration, Harshness) and light-weighting standards, especially from North America and the domestic passenger-car industry. - **New materials opened export doors** - developing a grade called 27Mn5Cr for differential gears got the company past testing and into the supply chain of PSA (Peugeot), while earlier work on grades 4320H and 18CrNiMo6 had already built the division's material-science credibility. - **Bigger, more complex parts** - the R&D team has pushed the envelope to 160 mm-diameter Curvic gears and has also developed LSD (Limited Slip Differential) track lock gears, each new geometry unlocking a fresh export project. - **Quality is automated, not inspected in** - an in-house ultrasonic cleaning system hits the cleanliness levels OEMs demand for differential gears, a vision control system spots defects and reads part numbers, and auto offset correction has eliminated manual intervention on the line. - **The plant move was about headroom** - shifting to Unit II at the CMDA Industrial Estate in Maraimalai Nagar in March 2025 was done because the lease agreement of the existing premises has expired. ## 2. Piston rings: the technology anchor **Decades of Japanese coating know-how, now royalty-free, let the company put ultra-hard, low-friction surfaces on rings for everything from alcohol-fueled scooters to turbocharged truck engines.** - **Coatings are the moat** - the portfolio spans alloy PVD (Physical Vapor Deposition, a way of laying down an ultra-thin, hard coating in a vacuum chamber) for alcohol fuels from E20 to E100, a soft middle layer PVD coating for commercial vehicles, and selective nitriding for turbo engines, all of which became more valuable when India moved to BS VI emission norms and demand for sophisticated surface treatments jumped. - **The Japanese connection, now untethered** - Nippon Piston Ring of Japan provided the technology from 1991, and even after the formal agreements were not renewed in April 2026 following NPR's merger with RIKEN, IP Rings keeps the accumulated know-how without royalty obligations and NPR continues to offer access to new PVD and advanced oil ring technologies. - **A faster way to make rings** - the Cam Coiling route for two-wheeler and passenger-car rings raises productivity and can produce rings with negative ovality, while preform taper wire and groove technology cuts grinding cycle time on steel rings. - **The R&D pipeline is coating-heavy** - future work targets hydrogen-free DLC (Diamond-Like Carbon) coating for all fuel types, three-piece oil rings for light commercial vehicles to cut oil consumption, 160 mm rings for gensets, and tiny rings for turbochargers. - **Wins with nameplate customers** - R&D efforts have resulted in business from VW, M&M MDI, Hino, and TATA, including entry into TATA's 1.5-litre and turbo engine segments. ## 3. Crank pins: the precision companion **A small, steady line of engine pins that rides alongside the rings and forgings into the same OEM supply chains.** - **Sold as part of the same basket** - crank pins contributed about 8% of sales in FY25, a share that has barely moved from the 7-8% range of the prior two years, because they are sold to the same domestic and export OEMs and Tier-1 suppliers that buy the company's other components. - **Simple recognition logic** - revenue is recognised at the point of dispatch when control passes to the customer, generally when the product is despatched or appropriated in accordance with the terms of Sale, while for Rings, Pins and Orbital cold formed transmission products it is based on the terms of the tender. ## 4. Tooling: the captive enabler with a side income **A specialty toolroom that builds the dies and tooling for the piston-ring and cold-forging operations, and sells a small fraction of its output to outside customers.** - **Feeds the proprietary processes** - the tooling capability underpins the integrated design, engineering and manufacturing model by developing dies in-house for both the piston ring and OCF forging operations, which is how the company protects the process know-how that differentiates its main products. - **A steady contributor** - tooling has held at roughly 1.5% to 2% of sales across FY23 to FY25, making it the smallest of the four legacy product lines but a strategically necessary one. ## 5. Exhaust after-treatment systems: the newly in-housed emissions play **A business bought from the company's own joint venture in mid-2026 that designs and builds exhaust systems to clean up what comes out of on-road and off-road engines, with Rs. 39 Crores of turnover already on the books.** - **Bought, not built from scratch** - the business originated as a 50:50 joint venture with IPR Eminox Technologies Private Limited, incorporated in December 2021, and was acquired on a going-concern basis through a slump sale in June 2026 for a nominal consideration of Re. 1, with IP Rings taking over Rs. 2.67 Crores of fixed assets, Rs. 2.08 Crores of working capital, and Rs. 3.45 Crores of bank liabilities. - **The JV did the development work** - Eminox brought the emissions-systems know-how, and the joint venture spent its first years on customer, product, market and vendor development, growing turnover from near zero at incorporation to Rs. 4.59 Crores by FY24 before scaling to Rs. 39 Crores in FY26. - **Design stays with the JV** - alongside the asset purchase, IP Rings signed a Business Transfer Agreement with IPR Eminox for purchase of its manufacturing business, so the JV entity continues to exist and feeds the manufacturing operation with technical support. # Group structure and partners **IP Rings sits inside one of India's largest automotive conglomerates, has a North American subsidiary for customer proximity, and has just restructured its longest-standing technical relationship.** - **The Amalgamations Group umbrella** - the holding company is Simpson & Company Ltd and the ultimate holding company is Amalgamations Private Ltd; fellow subsidiaries include India Pistons Limited, Tractors & Farm Equipment Limited, Bimetal Bearings Limited, and several others, creating a network of automotive and engineering companies that share technical resources. - **India Pistons is both group company and technical partner** - it holds a 10.02% shareholding and provides technical assistance and support to IP Rings, making it a related party that is also a source of engineering capability. - **A US subsidiary for on-the-ground presence** - IPR North America INC was approved for incorporation as a wholly owned subsidiary in 2023 to gain closer proximity to existing customers and to meet new ones in North America, which is the forgings division's key export market. - **The NPR relationship, concluded but not lost** - Nippon Piston Ring of Japan held a 5.56% stake and had been the technical collaborator since 1991; after NPR's merger with RIKEN, the two companies mutually agreed not to renew their agreements in April 2026, but IP Rings retains the technology provided over the years royalty-free and NPR will continue to offer access to new PVD coating and advanced oil ring technologies. - **The Eminox JV lives on as a design house** - IPR Eminox Technologies Private Limited remains a 50:50 joint venture with Eminox Limited of the UK even after the manufacturing division was sold to IP Rings, and it now provides licensing and technical support for design development under a new agreement.