Specification AgeRangeDescription : Adult BikeType : BMX Bike BikeType1 : Hybrid Bike BikeType2 : Road Bike BikeType3 : Cruiser Bike BrakeStyle : U Brake Brand : SUNDAY BIKES BulletPoint1 : 100% 4130 chromoly frame BulletPoint2 : Broc Raiford signature geometry BulletPoint3 : Removable U-brake hardware and Gyro tabs BulletPoint4 : Integrated seat clamp BulletPoint5 : Wave Down Tube: Down tube dents are common with the competitor's frames and they significantly weaken the front end of your bike. The double-butted, 1.45" diameter down-tube feature Sunday's Color : Matte Dark Brown ExternallyAssignedProductIdentifier : 5060792163296 ExternallyAssignedProductIdentifier1 : 0630950930500 ExternallyAssignedProductIdentifier2 : 630950930500 ImportDesignation : Imported IncludedComponents : Bicycle Pump ItemName : Sunday Darkwave BMX Frame - 21" TT, Matte Dark Brown ItemPackageDimensions_Height : 10 inches ItemPackageDimensions_Length : 37 inches ItemPackageDimensions_Width : 11 inches ItemPackageQuantity : 1 ItemTypeKeyword : bmx-bicycle-frames Manufacturer : Sunday Material : Alloy Steel NumberOfItems : 1 NumberOfSpeeds : 21 PartNumber : SBFR-122-MBRN ProductDescription : The Sunday Darkwave frame is built out of 100% 4310 chromoly and features Sunday's signature dent-resistant wave down tube to give riders a little extra peace of mind when things don't go according to plan. It stays looking clean with refined details like an integrated seat clamp, tapered stays, and integrated chain tensioners. Removable brake hardware and gyro tabs are also available when you need them and disappear when you don't.Features-100% 4130 chromoly frame-Broc Raiford signature geometry-Removable U-brake hardware and Gyro tabs-Integrated seat clamp-Wave Down Tube: Down tube dents are common with the competitor's frames and they significantly weaken the front end of your bike. The double-butted, 1.45" diameter down-tube feature Sunday's proven Wave shaping to fight denting against contact made from a rail, ledge, coping and whatever else happens to get thrown at it. -Miter Cut Top Tube: A miter-cut top tube creates a precise joint with the seat stays during welding. This increases the strength substantially over frames that use a “sandwiched” top tube at this critical junction.-Tapered Chain & Seat Stays: Both chain and seat stays taper to provide a refined and clean look to the frame while still providing strength. They are both angled on the inside for improved chain clearance and weight savings. -Hollow Dropouts with Chain Tensioners: Hollow 8mm wide dropouts are as light as a solid 5mm dropout, but over twice as strong. There is a small internal chain tensioner to hold the wheel in position and to simplify wheel removal.Item Specifications-Color:Matte Dark Brown-Mfg Size:21-Rear Axle:14mm Threaded x 110mm-Platform:Darkwave-TT (Effective):21-Wheel Size:20"-Fork Type:Not Included-Frame Material:Steel-Defined Color:Brown ProductSiteLaunchDate : 2023-09-15T10:29:32.743Z Size : 21 inch SkillLevel : All SupplierDeclaredDgHzRegulation : not_applicable SuspensionType1 : Rear SuspensionType2 : Front TargetGender : unisex