{"product_id":"bhir-1127340","title":"TOPPE KIT ROSA D.49.5 AM6 DUAL HEAD","description":"\u003cp\u003eThis new head, a larger portion of the combustion chamber comes into contact with the coolant to keep temperatures within an ideal range for enhanced engine effi ciency. The compression ratio has also been modified to accommodate the new temperature values.\u003c\/p\u003e\u003cp\u003eScope of delivery:\u003c\/p\u003e\u003cp\u003e1 Cylinder Ø 49.5 mm in special “MINACROM” cast iron (with chrome additive)\u003c\/p\u003e\u003cp\u003e1 Piston Ø 49.5 with high silicon content\u003c\/p\u003e\u003cp\u003e1 Chrome-plated steel piston ring, 1 mm thick\u003c\/p\u003e\u003cp\u003e1 Piston gudgeon pin Ø 12 x 42 mm\u003c\/p\u003e\u003cp\u003e1 Roller bearing for gudgeon pin Ø 12 x 15 x 15 mm\u003c\/p\u003e\u003cp\u003e2 Gudgeon pin circlips\u003c\/p\u003e\u003cp\u003e1 Combustion chamber\u003c\/p\u003e\u003cp\u003e1 Combustion chamber cover\u003c\/p\u003e\u003cp\u003e8 Green Viton O-ring Ø 7.66 x 1.78\u003c\/p\u003e\u003cp\u003e1 Green Viton O-ring Ø 53.7 x 1.78\u003c\/p\u003e\u003cp\u003e1 Green Viton O-ring Ø 22.22 x 2.62\u003c\/p\u003e\u003cp\u003e1 Green Viton O-ring Ø 28.24 x 2.62\u003c\/p\u003e\u003cp\u003e1 O-ring Ø 104.37 x 3.54\u003c\/p\u003e\u003cp\u003e1 Reduction for temperature sensor\u003c\/p\u003e\u003cp\u003e1 Cap M14 x 1.25\u003c\/p\u003e\u003cp\u003e1 Aluminium gasket for cap M14 x 1.25\u003c\/p\u003e\u003cp\u003e1 Cylinder base gasket, 0.5 mm thick\u003c\/p\u003e\u003cp\u003e1 Reduction bush for muffl er connection (from Ø 28 to Ø 25 mm)\u003c\/p\u003e\u003cp\u003eBore mm: 49,5\u003c\/p\u003e\u003cp\u003eStroke mm: 39\u003c\/p\u003e\u003cp\u003eDisplacement cm3: 75\u003c\/p\u003e\u003cp\u003eSquish mm: 0,9 ±0,1\u003c\/p\u003e\u003cp\u003eTiming diagram: exhaust: 195° transfer ports: 128°\u003c\/p\u003e\u003cp\u003eCompression ratio: geometric: 14,5:1 actual: 7,9:1\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e","brand":"TOP PERFORMANCES","offers":[{"title":"Default Title","offer_id":58185256337756,"sku":"1127340","price":562.25,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1012\/5072\/8284\/files\/800Wx800H-1127340-1.jpg?v=1783062825","url":"https:\/\/checkout.xparts.weostores.com\/products\/bhir-1127340","provider":"xparts","version":"1.0","type":"link"}