Two-Wheeler Parts Forging Manufacturer – Motorcycle & Bike Parts India
Shivam Forge is a specialist two-wheeler parts forging manufacturer based at Shapar, Rajkot supplying precision hot-forged motorcycle and bike components to OEMs and Tier 1 suppliers across India. Crankshaft blanks, connecting rods, fork yokes, swing arm pivots, wheel hubs, sprocket hubs, brake lever bodies and frame brackets — all produced to drawing in EN8, EN9, C45 and alloy steel. 500+ OEM clients, IATF 16949 process awareness, ISO 9001:2015 certified.
OEM Clients Served
Years of Forging Experience
Two-Wheeler Part Weight Range
Quality Management Certified
Every Ride Depends on Reliable Forgings
Two-wheeler drivetrain and chassis components operate at high cyclic loads, tight weight budgets and demanding assembly tolerances. A crankshaft blank that does not hold its journal diameter tolerance wastes machining time. A fork yoke with porosity risks rider safety. At Shivam Forge, we have spent over two decades supplying forged motorcycle parts to OEMs who cannot afford either of these outcomes.
Two-Wheeler Forged Components We Manufacture
Crankshaft Blanks
Forged crankshaft blanks for single-cylinder (100–225 cc) and twin-cylinder (250–650 cc) motorcycle engines. Material: EN8, EN9 or C45 per OEM specification. Journal diameters held to ±1.5 mm as-forged for predictable grinding stock. Pin throw controlled within ±0.5 mm. Grain flow follows the crank arm profile for maximum fatigue strength.
Connecting Rods
Hot-forged connecting rods in EN8 or EN24 for 2-stroke and 4-stroke motorcycle engines. I-section shank forged in closed dies with controlled flash. Big-end and small-end bore diameters forged to ±1.0 mm for reliable pre-machined allowance. Used by OEMs supplying Hero, Bajaj and TVS model ranges.
Front Fork Yokes (Triple Clamps)
Upper and lower fork yokes (triple clamps) in EN8 or alloy steel (SAE 4140) for standard and USD fork applications. Forging produces solid, porosity-free yoke stems with full grain continuity — critical because this component transfers all front-end impact loads from wheel to frame. Stanchion bores and stem bore machined to H7 tolerance in our CNC shop.
Swing Arm Pivots & Linkages
Forged swing arm pivot shafts and rear suspension linkage components in EN24 or 42CrMo4. These see combined bending and torsion from every road input. Hot forging followed by quench-and-temper heat treatment achieves 900–1100 MPa tensile strength and Charpy impact values suitable for sport and off-road motorcycle applications.
Wheel Hubs (Front & Rear)
Forged front and rear wheel hubs for motorcycles and scooters in EN8. Hub flanges are forged with spoke/stud PCD patterns close to net form, reducing post-forge drilling time. Brake drum and disc mounting faces are finish machined to drawing. Hub bearing bore held to H6 tolerance. Applicable to spoked and alloy wheel designs.
Sprocket Hubs, Brake Levers & Frame Brackets
Sprocket carrier hubs in C45 or EN9, front and rear brake lever bodies in EN8, kick-start levers, handlebar clamps, foot pegs and frame mounting brackets — all produced from closed impression dies to customer drawings. These smaller forged components are where our high-volume production capability (50,000+ pieces/month per part) matters most.
Materials for Two-Wheeler Forged Parts
EN8 (080M40 / C40)
Medium carbon steel. The workhorse of two-wheeler forging — crankshaft blanks, wheel hubs, brake drums, levers. Normalizing after forging gives 550–700 MPa tensile. Readily machinable and cost-effective for high-volume two-wheeler components.
EN9 (080M50 / C50)
Higher carbon content than EN8. Used for sprocket hubs, gear blanks and components requiring wear resistance without full alloying. Achieves 700–800 MPa tensile after normalizing. Good response to induction hardening for surface wear applications.
C45 (1.0503 / SAE 1045)
International medium carbon equivalent, specified by Bajaj, TVS and Honda supply chains. Properties equivalent to EN8 but referenced in IS 1570 Part 2 as C45. Shivam Forge stocks C45 billets for OEMs requiring IS grade marking on material test certificates.
EN24 (817M40 / SAE 4340)
Nickel-chromium-molybdenum alloy steel for high-stress two-wheeler applications — connecting rods in performance engines, front fork yoke stems for large-displacement motorcycles, swing arm pivots for off-road bikes. Quench and temper to 900–1100 MPa tensile, 800 MPa yield.
SAE 4140 / 42CrMo4
Chromium-molybdenum alloy steel for swing arm pivots, handlebar clamp bodies and components requiring high fatigue strength with moderate toughness. Achieves 850–1050 MPa tensile after Q&T. The most common alloy steel specified by Royal Enfield and KTM supply chains for chassis pivot forgings.
20MnCr5 (Case Hardening Steel)
For two-wheeler gearbox components, sprocket dogs and clutch hubs requiring a hard wear-resistant surface over a tough core. Carburizing and case hardening after forging gives 58–62 HRC case with 750–850 MPa core tensile — the standard specification for motorcycle gearbox selector forks and shift drums.
Supply Chain & Quality for Two-Wheeler OEMs
IATF 16949 Process Awareness
Our production processes are run with awareness of IATF 16949 requirements — FMEA, control plans, MSA and SPC charting on critical dimensions. While our current scope is ISO 9001:2015, the quality disciplines we apply match Tier 1 expectations and support customer PPAP submission packages.
First Article & PPAP Support
We provide first article inspection reports (FAIR), dimensional layout reports, material test certificates, capability studies (Cpk ≥ 1.33 on critical dimensions) and process flow documentation to support your PPAP Level 3 submission to Hero, Bajaj, TVS or Honda.
High-Volume Production Capability
Dedicated hammer/press lines for confirmed two-wheeler programs. Single component volumes of 20,000–100,000 pieces/month are accommodated with scheduled weekly or bi-weekly dispatch. Kanban replenishment and VMI arrangements available for anchor customers.
Heat Treatment & Machining In-House
Normalizing, annealing, hardening and tempering done in-house using calibrated furnaces with chart recording. CNC turning, milling and drilling on forged two-wheeler parts to reduce your supply chain nodes. We supply machined-to-drawing crankshaft blanks and fork yokes ready for grinding.
Traceability & Documentation
Each lot of two-wheeler forgings is tagged with heat number, billet grade, forge date and inspection status. Material test certificates from accredited labs are supplied with each consignment. For export supply to Honda, Yamaha or KTM overseas plants, we provide EN 10204 3.1 certificates.
Packaging for Two-Wheeler Parts
Components packed in corrugated tray-and-lid boxes or returnable metal bins with VCI paper to prevent transit rust. Machined bores protected with plastic plugs. Labelling per customer's part number and barcode format. We align with Bajaj and Hero packing standards on request.
Shivam Forge has been supplying hot-forged two-wheeler parts to Indian motorcycle OEMs and their Tier 1 supply chains for over 20 years, operating from our ISO 9001:2015 certified facility at Shapar, Rajkot, Gujarat. Two-wheeler parts forging is one of our core strengths — the combination of high production volumes, tight dimensional tolerances on small components, and the safety-critical nature of motorcycle drivetrain and chassis parts demands exactly the kind of disciplined process control we run every day.
Our two-wheeler forging capability covers crankshaft blanks for engines from 100 cc to 650 cc, connecting rods in EN8 and EN24, front fork yokes in SAE 4140, swing arm pivots in 42CrMo4, wheel hubs in EN8, and smaller components including sprocket hubs, brake levers, kick-start levers and frame brackets. These are all closed die hot forgings produced on our hammer and press lines, induction heated to 1150–1250°C, with hot flash trimming and immediate controlled cooling.
Material selection for two-wheeler forgings matters more than most buyers realise. Crankshaft blanks run well in EN8 or C45 for 100–150 cc engines where normalizing is the heat treatment. But a 300–650 cc twin cylinder crankshaft blank needs EN24 (SAE 4340) to carry the higher torsional loads and respond predictably to induction journal hardening. Shivam Forge stocks billets in all these grades and provides material selection guidance at the quotation stage — you do not need to specify grade if you can specify your engine bore, stroke and power output.
We supply documentation to the level expected by Tier 1 automotive customers: material test certificates with heat chemistry and mechanical test results, dimensional FAIRs, Cpk studies on critical dimensions, and process FMEA on request. While Shivam Forge is ISO 9001:2015 certified, our quality system has been built with IATF 16949 disciplines in mind — we run control plans, gauge R&R studies, and SPC on two-wheeler forging lines that supply more than 50,000 pieces/month of a single part number.
Procurement teams evaluating two-wheeler forging sources in India should consider total delivered cost, not just unit price. Shivam Forge's Shapar, Rajkot location gives road freight access to Pune (Hero, Bajaj suppliers), Chennai (TVS, Royal Enfield suppliers) and Delhi NCR (Hero, Honda suppliers) within 24–48 hours. Our in-house machining eliminates a supply chain node. Our heat treatment capability means we ship components at specified hardness, not raw forgings that require outsourcing. Call +91-92657-72827 or email sales@shivamforge.com to discuss your two-wheeler forging requirement.
Frequently Asked Questions
Which two-wheeler parts does Shivam Forge manufacture by forging?
We forge crankshaft blanks, connecting rods, front fork yokes (triple clamps), swing arm pivot shafts, front and rear wheel hubs, sprocket carrier hubs, brake lever bodies, kick-start levers, handlebar clamps, foot pegs and frame brackets for motorcycles, scooters and mopeds.
What material grades do you use for two-wheeler forged components?
Standard two-wheeler forgings use EN8, EN9 and C45. High-stress components such as connecting rods, fork yokes and swing arm pivots are forged in EN24 (SAE 4340) or SAE 4140 / 42CrMo4. Gearbox components requiring case hardening are produced in 20MnCr5 or EN36.
Do you supply two-wheeler forgings to Hero, Bajaj, TVS or Honda OEMs?
We supply to Tier 1 and Tier 2 suppliers in the Hero, Bajaj, TVS, Honda and Royal Enfield supply chains. Direct OEM supply is also considered for approved vendors. Our processes align with IATF 16949 requirements and we support PPAP submission documentation.
What are your minimum order quantities for two-wheeler forged parts?
For new programs, minimum trial quantities are typically 500–1000 pieces to validate first article. For production orders, minimum order quantity depends on part size and die setup cost — generally 2000 pieces per order for small components and 500 pieces for larger components. Contact us for a specific MOQ based on your part.
Can you supply machined two-wheeler forgings ready for grinding or assembly?
Yes. We offer CNC rough machining, semi-finish and finish machining on forged two-wheeler components. Crankshaft blanks are supplied with journals turned to grinding stock allowance. Fork yoke stanchion bores are reamed to H7. Wheel hub bearing bores are finish-bored to H6.
How do you control dimensional consistency for high-volume two-wheeler production?
Billet weight is controlled to ±2%, induction heating temperature is monitored with a calibrated pyrometer, and first-off and last-off pieces from each die set are dimensionally checked against the control plan. Critical dimensions are tracked on SPC charts with Cpk ≥ 1.33 as the minimum acceptable capability.
Do you have forging dies for standard two-wheeler models?
We have dies for common Indian motorcycle platforms (100–225 cc single cylinder) including several crankshaft, connecting rod and hub profiles. For OEM-specific or proprietary part numbers, we design and manufacture new dies at our Rajkot tool room — typically 2–4 weeks die lead time.
What is your lead time for sample forgings for a new two-wheeler part?
For a new part requiring a new die, sample lead time is 4–6 weeks (2–4 weeks die manufacture + 1–2 weeks first article). If an existing die can be modified or matched, we can supply development samples in 2–3 weeks. Share your drawing with us for an accurate timeline.
Trusted forging manufacturer — Rajkot, Gujarat
Shivam Forge delivers precision hot-forged components from our integrated Shapar, Rajkot facility — covering forging, CNC machining, heat treatment, and quality inspection under one roof.
- Hot forging from quality alloy steel billets
- In-house CNC/VMC machining to drawing
- Heat treatment — normalizing, hardening, tempering
- CMM inspection and full quality certification
- Custom OEM forging from customer drawings
- Fast delivery from Shapar, Rajkot, Gujarat
- Export experience — Europe, Middle East, Americas
Factory Address
Plot No.3/B, Chaitanya Industrial Area, Shapar (Rajkot) – 360024, Gujarat