Aztec Road System Rim Brake Blocks brand_Birzman For either specific frame mount

For either specific frame mount or handlebar end plug mount

But the single most important factor that impacts the shifting is the upper pulley itself

They feature a 35mm bar clamp with 20mm rise

Core: BASF Infinergy (Closed Cell Particle Foam/E-TPU)

Fits Bar Width - L: 23

Aztec Road System Rim Brake Blocks brand_Birzman For either specific frame mountAztec Road System Rim Brake Blocks Replacement brake block system for road brakes Features: Anodised aluminium alloy pad shoe Brake pad inserts are held in securely by screws Replacement pad inserts available separately Simple slide out and slidein pad replacement Supplied complete with one set of alloy rim compatible pad inserts Road Insert pads are made from our finest braking compound offering you great braking power and durability in all weather