S&M Mad Dog 990 22″ Cruiser Frame

Product Overview

The S&M Mad Dog 990 is a full chromoly BMX frame built for 22-inch wheels, designed as a signature model for Chris "Mad Dog" Moeller. It combines race-inspired geometry with street and trail versatility, featuring both traditional 990 U-brake mounts and a disc brake tab for modern braking options. The tall standover and balanced geometry accommodate aggressive riding on tracks, trails, and street terrain.

Key Features

• Dual brake compatibility – Chain-stay 990 mounts and disc brake tab allow choice between U-brakes or disc setup
• Disc brake tab for 120mm or 140mm rotors – 120mm rotor requires 0mm IS-to-POST adapter; 140mm rotor requires 20mm adapter
• 5-inch tall integrated Campy-style head tube – Accepts integrated headsets for clean appearance and reduced stack height
• T-slotted seat tube – Compatible with traditional 28.6mm seat clamps or quick-release versions for tool-free adjustments
• 110mm rear dropout spacing – Standard BMX hub spacing simplifies wheel and parts selection
• Engraved detailing – Shield on head tube, '87' on bottom bracket shell, and Mad Dog tag on seat tube
• 100% chromoly steel construction – Full heat-treated tubing provides strength and durability for hard riding
• Made in USA – S&M manufacturing ensures consistent quality and frame alignment

Technical Specifications

• Wheel size: 22 inches
• Top tube lengths: 21.75″, 22″, 22.25″, 22.5″
• Rear end length: 14.15 inches
• Head tube angle: 74.25°
• Standover height: 10 inches
• Bottom bracket height: 11.8 inches
• Seat tube angle: 71°
• Head tube type: 5-inch integrated Campy-style
• Bottom bracket type: Mid
• Brake mounts: Chain-stay 990 and disc brake tab
• Disc rotor compatibility: 120mm (0mm adapter) or 140mm (20mm adapter)
• Dropouts: 3/8-inch
• Rear hub spacing: 110mm
• Seat post size: 1 inch / 25.4mm (frame slotted for 28.6mm clamp)
• Weight: 5.1 lbs
• Maximum tire size: 22 × 2.35 inches
• Maximum sprocket size: 36 teeth
• Material: 100% chromoly steel

Compatibility and Ideal Use Cases

This frame requires 22-inch wheels with 110mm rear hub spacing, 3/8-inch axles, a mid bottom bracket, integrated headset, and 1-inch seat post with 28.6mm clamp. Multiple top tube lengths (21.75″–22.5″) accommodate riders from approximately 5'6″ to 6'+ depending on riding style and preference. Best suited for race, trail, and street riding where the combination of larger wheels and responsive geometry provides speed and stability. The dual brake mount system allows riders to choose between traditional 990 U-brakes or modern disc brakes. For disc brake setups, Profile hubs or similar narrow-flange designs are recommended for proper spoke-to-caliper clearance. Maximum sprocket size is 36 teeth for proper chain alignment.