Shimano PG-730 7-Speed Cassette | 12-28T Black Steel Freehub Cogs

Product Overview

Upgrade your 7-speed drivetrain with the Shimano PG-730 7-Speed Cassette. This cassette features seven durable black steel cogs in a 12-14-16-18-21-24-28 tooth arrangement. Designed for entry-level mountain bikes, hybrids and commuter bikes, the PG-730 delivers reliable shifting and long-lasting performance in wet or dry Irish conditions. Installation is straightforward—slide onto any Shimano-compatible freehub body and secure with the lockring (not included).

Key Features

• Seven Steel Cogs: 12-14-16-18-21-24-28 teeth for a versatile gear range that handles Dublin hills and flat canal paths
• Black Steel Construction: Durable finish resists corrosion from rain and road grit
• Shimano HyperGlide Technology: Precision cut ramps ensure smooth, reliable shifts under load
• 7-Speed Compatibility: Fits all Shimano/SRAM freehub bodies designed for 7-speed cassettes
• Weight: Approximately 415 g, balancing strength and manageable weight for everyday riding
• Lockring Interface: Standard Shimano lockring (lockring not included) for easy installation and removal

Why Dublin Riders Choose It

Whether your commute takes you through Temple Bar or you explore Wicklow’s gravel trails, the PG-730 offers dependable shifting and gear range to tackle steep climbs or cruise flat sections. Irish cyclists trust this cassette for smooth shifts, low maintenance and a price that makes it easy to replace worn components without breaking the bank.

Technical Specifications

• Manufacturer SKU (MPN): CS-730
• Item No.: 20095219
• Gear Teeth: 12-14-16-18-21-24-28
• Number of Speeds: 7
• Material: Black steel cogs with aluminium carrier spacer
• Weight: ≈ 415 g
• Compatibility: Shimano/SRAM freehub bodies for 7-speed cassettes
• Color: Black
• Country of Manufacture: Taiwan

Usage Recommendations

Entry-Level Mountain Bikes

If you ride Wicklow singletrack on a hardtail or basic full-suspension bike, this cassette gives you low gears for climbs and mid-range cogs for flat or rolling terrain. Pair with a Shimano Tourney or Altus derailleur and a 7-speed chain (e.g., CN-HG40) for smooth, quiet performance.

Hybrid & Commuter Bikes

Great for Dublin commutes, the PG-730 helps you tackle Cemetery Road or Daingean Road hills and then shift into higher gears for canal towpath cruising. Its steel construction stands up to frequent shifting and wet conditions.

Recreational & Leisure Rides

Ideal for weekend spins around Phoenix Park or casual tours along coastal roads, this cassette offers a comfortable gear spread. Use a medium chainring up front for balanced gear ratios. Maintain chain cleanliness and correct derailleur adjustment for best results.

Replacement & Upgrade

Replace a worn 7-speed freewheel or upgrade from a narrow-range setup. The 12-28T spread reduces cross-chaining and improves cadence options. Apply a small amount of grease on the freehub body splines before installing to prevent seizing.

Recommended Accessories & Complementary Items

• Shimano CN-HG40 7-Speed Chain: Ensures crisp shifting and extended drivetrain life
• Rear Derailleur: Shimano Tourney (RD-TY300) or Altus (RD-M310) for reliable indexing
• Cassette Lockring Tool: Shimano TL-LR15 or TL-CN26 plus a chain whip to hold the cassette while tightening
• Chain Whip Tool: Holds the cassette stationary during removal or installation
• Rear Wheel Service Kit: Includes grease and cone wrenches to service bearings before installing the cassette
• Drivetrain Cleaning Kit: Brushes and degreaser to keep cogs, chain, and derailleur pulleys clean and improve shifting precision

Tips & Tricks

• Grease Splines: Lightly grease the freehub body splines before sliding on the cassette to make future removal easier
• Tighten Correctly: Use a lockring tool and torque to about 40 Nm (check Shimano specs) to ensure the cassette is secure without damaging the freehub
• Check Chain Compatibility: Pair with an HG-compatible 7-speed chain like the CN-HG40. A properly sized chain ensures smooth engagement across all cogs
• Inspect Cog Wear: Look for shark-tooth wear on the cogs—if teeth appear hooked, replace both chain and cassette to prevent skipping and poor shifting
• Adjust Derailleur B-Screw: When installing a cassette with a larger largest cog, check the derailleur’s B-screw setting to maintain proper jockey wheel clearance
• Test Ride & Re-Check: After installation, ride through all gears and then re-check lockring tightness and derailleur indexing for optimal performance

Why Choose Pedro Pedals?

We are a local bike shop in Dublin 8. We offer fast asphalt delivery to Dublin, Cork, Galway and anywhere in Ireland. We fix flats, assemble bikes, clean and service e-bikes, fat bikes, road bikes, and racing bikes. We answer questions and help you pick the right cassette, chain, and derailleur setup for Ireland’s roads and trails.

Whether you ride every day or just on weekends, we back every purchase with practical advice and hands-on support. Ride with confidence knowing we have your back in all weather.

Ready to Upgrade Your Gearing?

Don’t settle for sluggish shifts. Add the Shimano PG-730 7-Speed Cassette to your cart now for just €25.99 and enjoy crisp, reliable gear changes on every Dublin ride. Order today at Pedro Pedals for fast shipping and expert help.