KMC X12 chains feature a double X bridge shape for fast and smooth shifting. - Compatible with SRAM 12-speed systems - Double X bridge shape with inner and outer plate chamfering for smooth and fast shifting - Mushroom riveted pins for the highest pin power and allows shifting under heavy loads - 1/2 x 11/128 - 126 Links

- 1/2" x 1/8" - 100 Links - Single-speed - BMX Racing, Freestyle - Hollow Pins - Half Link Design

The KMC X-Series has been designed with the specific characteristics of the Shimano, SRAM, and Campagnolo systems in mind and will meet the most demanding requirements. Elaborately designed and manufactured, the X-Bridge technology, thanks to precisely chamfered plates, allows a smooth propulsion and perfect gear changes in all driving situations. - Size: 1/2"x11/128" - Length: 116 Links - Weight: 273 grams

The KMC S1 is a single-speed chain suitable for use with internally geared hubs, or any single speed drivetrain. - High pin power with reinforced durability - Offers a quieter riding experience - Anti-drop design - Inner plate chamfering helps to provide fast and smooth shifting - Internal gear hub system compatible - Links (links): 112 - Color: Silver - Width: 9.3mm - Drivetrain Speeds: Single Speed 1/2 x 1/8-inch - Half Link Chain: No

- Z51: standard bushingless, chamfered plate chain for 5-8 speed - Z30: economy bushing-less chain for 5-8 speed

- 1/2" x 3/32" - 112 Links - Silver/Black - Single speed - 3/32" Track Bikes & BMX Racing, Freestyle - Special Dynamic Configured Plates - Anti-Drop Design - Heavy Duty Structure - Inner Plate Chamferring - Mushroomed Riveting - Special Dynamic K Configuration

S1 Rustbuster is a basic, affordable replacement 1/8" chain. - For non-derailleur bikes: BMX, cruisers, etc. - Rustbuster rust-proof finish, suitable for beach environments and winter commuting - Includes KMC Master Link - Links (links): 112 - Color: Silver - Width: 9.3 mm - Drivetrain Speeds: Single Speed 1/2 x 1/8-inch - Chain Connection Type: Reusable Master Link - Half Link Chain: No

The Z8.1 chain features inner plate chamfering and a z-bridge shape, making it suitable for a variety of riding styles. - Inner plate chamfering to smooth shifting - Z-bridge shape - Links (links): 116 - Width: 7.1 mm - Drivetrain Speeds: 6, 7, 8 - Chain Connection Type: Reusable Master Link

Z7 is a basic, affordable replacement chain for use on 6 and 7 speed bikes. - Features inner plate chamfering to smooth shifting - Z-bridge shape

- X101: hi-performance, chamfered, anti-drop, lightweight, Singlespeed chain for Mountain, BMX, Fixie, Track applications - Z410HD: heavy duty model has thicker sides plates for 25% higher tens