S&M Black Magic BMX Frame

The Black Magic is Matty Aquizap's signature trails frame, built from butted Thermal-X chromoly tubing with heat-treated dropouts and adjustable 14.10"-14.75" rear end. Features 5" integrated headtube, 9.3" standover, and stable 74° head tube angle designed for high-speed trails riding. Made in the USA and available in four top tube lengths from 21" to 22".

Key Features

• Butted Thermal-X chromoly tubing – Variable wall thickness removes material in low-stress areas while Thermal-X processing increases strength through heat treatment, optimizing strength-to-weight ratio
• Adjustable 14.10"-14.75" rear end – Sliding dropouts allow 0.65" of chainstay length adjustment for fine-tuning wheelbase—shorter for quicker handling or longer for maximum stability on big jumps
• 74° head tube angle – Relaxed steering geometry provides stable, predictable handling for high-speed trails sections and confident landing characteristics
• 5" integrated headtube – Taller headtube reduces spacer stack needed for proper bar height while maintaining clean aesthetics with integrated bearing seats
• 9.3" standover height – Balanced standover provides adequate clearance for aggressive riding without excessive height that compromises handling
• 4Q-Baked heat-treated dropouts – Post-weld heat treatment on 14mm dropouts increases material strength and durability in high-stress axle area
• Integrated seat clamp – Built into frame to eliminate separate clamp hardware and reduce potential failure points
• Welded chainstay 990 brake mounts – Traditional U-brake bosses for riders preferring 990-style brakes

Technical Specifications

• Top tube lengths: 21", 21.25", 21.5", 22"
• Rear end (chainstay) length: 14.10"-14.75" (adjustable)
• Head tube angle: 74°
• Seat tube angle: 71°
• Bottom bracket height: 11.6"
• Standover height: 9.3"
• Head tube: 5" tall, integrated 45°/45° (41.8mm)
• Bottom bracket: Mid
• Dropouts: 14mm slots with 4Q-Baked heat treatment
• Brake mounts: Welded chainstay 990
• Gyro tabs: None
• Seatpost size: 1" (25.4mm)
• Seat clamp: Integrated
• Tubeset: Butted Thermal-X chromoly
• Frame weight: 5.4 lbs (2.45 kg)
• Made in: USA

Compatibility and Ideal Use Cases

Requires integrated headset (45°/45°, 41.8mm), mid bottom bracket, 14mm rear axle, 25.4mm (1") seatpost, and 990-style U-brakes if running brakes. The adjustable 14.10"-14.75" rear end allows riders to customize wheelbase for specific terrain and riding style—slam it short for tighter transitions and quicker handling, or extend it for maximum stability on big dirt jumps and high-speed trails sections. The 74° head angle and butted Thermal-X construction prioritize stable handling and weight savings for serious trails and dirt jumping. The 5" headtube and 9.3" standover provide balanced proportions for aggressive riding without excessive stack height. Best suited for intermediate to advanced trails riders who prioritize speed, stability, and adjustability. The 21"-22" top tube range accommodates riders approximately 5'8" to 6'2" tall, though individual fit preference varies based on riding style.