FIT Bike Co Key Guard Sprocket (25, 28T)

FIT Bike Co Key Guard Sprocket (25, 28T)

This CNC-machined guard-style sprocket features an integrated bashguard design with updated tooth profile for improved chain engagement and extended tooth life. Built with offset teeth for better chain alignment and two mounting positions to extend grind life. Made in the USA and available in 25T and 28T options.

Key Features

• Integrated bashguard design – Extended outer ring protects sprocket teeth and chainring from impacts during grinds, pedal stalls, and obstacle contact
• Two mounting positions – Dual bolt hole orientations allow precise chain alignment adjustment and extend usable life by rotating sprocket when teeth wear
• Updated tooth profile – Modern tooth geometry improves chain retention, engagement consistency, and extends tooth lifespan compared to older profiles
• Offset teeth for improved chain alignment – Teeth positioned for optimal chain tracking reduces wear and improves drivetrain efficiency
• CNC-machined construction – Precision machining ensures accurate tooth profiles and consistent tolerances for smooth chain operation
• 15/16" (24mm) center bore with included adapters – Universal bore fits 19mm, 22mm, and 24mm crank spindles using provided steel hat washers

Technical Specifications

• Material: CNC-machined aluminum
• Tooth width: 1/8"
• Center bore: 15/16" (24mm)
• Spindle compatibility: 19mm, 22mm, 24mm (with included adapters)
• Mounting: Two positions
• Available tooth counts: 25T, 28T
• Weight: 4.8 oz (25T), 5.92 oz (28T)
• Included hardware: 19mm and 22mm steel hat washers
• Made in: USA

Compatibility and Ideal Use Cases

Works with all three-piece cranks using 19mm, 22mm, or 24mm spindles and standard 1/8" BMX chains. The integrated bashguard design suits street and park riders who frequently grind on their sprocket side or perform tricks where the sprocket contacts obstacles. Two mounting positions allow chain alignment adjustment and extend sprocket life by rotating to fresh teeth after initial wear. The 25T option provides quick acceleration and easier manual balance for technical street riding, while the 28T balances acceleration with reasonable top speed for all-around park and street use. The guard design adds protection at the cost of slightly increased weight compared to non-guard sprockets.