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Discussion History

Twin-Spar Frame

Assembly

Cast and extruded aluminium twin-spar frame that wraps the engine for torsional stiffness. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Twin-Spar Frame parts and their functions

5 top-level parts · 5 parts in total · full bill of materials below
Twin-Spar Frame parts diagram: 1 main frame spar, 2 rear subframe, 3 swingarm, 4 steering head tube, 5 fastener set. 5 parts in 5 top-level items.
Twin-Spar Frame parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 Main Frame Spar 1× Beam pair running from the steering head to the swingarm pivot.
2 Rear Subframe 1× Rear seat support
3 Swingarm 1× Asymmetric braced aluminium swingarm locating the rear wheel.
4 Steering Head Tube 1× Forged head tube carrying the steering bearings and fork yokes.
5 Fastener Set 1× Frame hardware

3D model

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Build & assembly graph

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Bill of materials for Twin-Spar Frame

5 top-level lines · 5 rows shown · 5 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Main Frame Spar sport-motorcycle-main-frame 1× 1 · part
2 Rear Subframe sport-motorcycle-subframe 1× 1 · part
3 Swingarm sport-motorcycle-swingarm 1× 1 · part
4 Steering Head Tube sport-motorcycle-steering-head 1× 1 · part
5 Fastener Set fastener-set 1× 1 · part

Where the twin-spar frame is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Used in 1 assembly

Sport Motorcycle

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$200. How estimates work
VendorHQSpecialtyMOQLead time
🇮🇳Bharat Forge
bharatforge.com ↗ 		Pune, IN Forgings & metal parts 500 pcs 6–10 wks
🇨🇳CITIC Dicastal
dicastal.com ↗ 		Qinhuangdao, CN Aluminium castings & wheels 500 pcs 6–10 wks
🇮🇳Tata AutoComp
tataautocomp.com ↗ 		Pune, IN Auto components 500 pcs 6–10 wks
🇸🇬Beyonics
beyonics.com ↗ 		Singapore Precision metal & mfg 500 pcs 6–10 wks
🇮🇳Sundaram Clayton
sundaram-clayton.com ↗ 		Chennai, IN Die castings 500 pcs 6–10 wks