As an Amazon Associate, we earn from qualifying purchases. Summit Racing SUM-G4757 Summit Racing Summit Racing . SUM-G4757 Gallery Attributes Brand name, Manufacturer name, Manufacturer, Attribute00Summit Racing Attribute01, Attribute04, MPN, SKUSUM-G4757 Attribute02Header Reducers Attribute03Summit Racing? Exhaust Reducer Kits Attribute05, UPC190861035546 Attribute063-bolt flange Attribute073.50 Attribute082.500 in. Attribute09No Attribute10, Attribute11Yes Attribute12Composite with steel core Attribute13Steel Attribute14Natural Attribute15Sold as a pair. Attribute16Reducer outlet diameter is measured outside diameter. AttributeKey00Brand AttributeKey01Manufacturer's Part Number AttributeKey02Part Type AttributeKey03Product Line AttributeKey04Summit Racing Part Number AttributeKey05UPC AttributeKey06Collector Attachment AttributeKey07Collector Diameter (in.) AttributeKey08, length_Attrib, width_AttribReducer Outlet Diameter AttributeKey09Oxygen Sensor Bung Included AttributeKey10Bolts/Studs Included AttributeKey11Gaskets Included AttributeKey12Gasket Material AttributeKey13Reducer Material AttributeKey14Reducer Finish AttributeKey15Quantity AttributeKey16Notes DimensionUnitinch Extra Product NameSummit Racing SUM-G4757 Summit Racing diameter, length, width2.5 moq, multiple, tierMinQty11 qtyInStockMonday 6/19/2023 tierPrice139.9900 Distributor offers SellerSKUMOQIn stockMultiplePrices Summit RacingSUM-G47571Monday 6/19/202311 @ $39.99