A bike chainset that delivers dependable gearing for 7/8-speed drivetrains and keeps gear selection straightforward for mixed-terrain riding, the SHIMANO Altus Chainset. Enjoy steadier climbs and simple cadence control for weekend outings and everyday use. Is the specification and fit right for your bike and riding style?
⚡ At a Glance
- • Pedalling Efficiency: Smooth cadence control across commonly used gear ranges for everyday riding
- • Best for: Recreational cyclists and riders updating older 7/8-speed drivetrains
- • Not ideal for: Users who require an integrated chainguard for commuter protection
Compact double configuration delivers a practical gear range suited to general riding. Designed with straightforward fitment and minimal extras to keep maintenance simple.
Easier climbs and controlled shifts – with 36/22 chainrings
A compact double uses a 36-tooth outer and 22-tooth inner chainring, creating lower gear ratios for climbing and moderate top-end gearing for flats. The smaller inner ring reduces pedal effort on steep sections while preserving usable gears for steady speed.
Lower bottom gears make steep sections more manageable and keep cadence comfortable on varied terrain.
Straightforward drivetrain replacement – with 7/8-speed compatibility
Designed for 7/8-speed systems, chainline and spacing match commonly used chains and shifters in that speed range. Installation typically requires no major changes to shifters or cassette when upgrading similar setups.
Useful when renewing an older or simpler drivetrain, avoiding a full-group overhaul while restoring reliable gearing.
Frame-friendly fit and pedalling feel – with Boost compatibility and 170 mm cranks
Specified crank length of 170 mm affects leverage and leg extension during each pedal stroke, while Boost compatibility indicates suitability for wider hub/frame standards. Together these influence fit, clearance and overall pedalling geometry.
Suitable for riders on Boost frames who favour 170 mm cranks for a balanced blend of leverage and cadence control.
✨ The 4 Key Reasons for SHIMANO Altus Chainset
- 36/22 chainring combo – Versatile gear spread for climbs and flats without extra rings
- 7/8-speed compatibility – Fits common older drivetrains, enabling easy replacement and setup
- 170 mm crank length – Balanced leverage and reach for most adult riders
- No chainguard supplied – Cleaner, simpler layout for quicker maintenance and chainline checks
📋 Technical Details at a Glance
- Category: Chainset
- Chainrings: 36/22 teeth
- Speed compatibility: 7/8-speed
- Crank length: 170 mm
- Boost compatibility: For Boost frames/hubs
❓ Frequently Asked Questions
Q: What chainring sizes are included?
A: The chainset uses a 36-tooth outer and a 22-tooth inner chainring.
Q: Which drivetrain speeds is it compatible with?
A: Compatibility is stated as 7/8-speed systems, matching chains and shifters for those speeds.
Q: Does the chainset come with a chainguard?
A: No, the chainset is supplied without a chainguard.
🏆 Our Verdict
The Shimano Altus Chainset suits recreational riders and those refreshing older 7/8-speed bikes who need a reliable, simple double setup. The compact 36/22 ring combination, Boost compatibility and 170 mm crank length deliver a practical gear range and a predictable fit. Straightforward specification and common compatibility make for an easy upgrade with sensible long-term utility.
