If you’re shopping for a new road bike or upgrading your drivetrain, you may be asking: is the Shimano 105 10 or 11-speed? The answer matters because it affects shifting performance, compatibility, and even resale value. Let’s break it down so you can choose the right setup with confidence.
Shimano 105 Generations and Speed Options
Shimano 105 has been around for decades, and its speed options have changed with each generation:
- Older 105 (5700 series): 10-speed mechanical groupset, still common on older road bikes.
- Shimano 105 (5800 series): The first 11-speed 105, offering smoother shifting and wider gear range.
- Shimano 105 R7000: Modern 11-speed groupset, available in rim and disc brake versions.
- Shimano 105 R7100: The latest 12-speed Di2 electronic version, launched recently for higher-end performance.
Why Does Speed Count?
The number of speeds refers to the cogs on the rear cassette. More speeds mean tighter gear steps and smoother transitions, especially when climbing or sprinting. For most riders today, 11-speed 105 offers the best balance of performance and value.
Should You Upgrade to 11-Speed?
If you currently ride a 10-speed 105 bike, you’ll notice an upgrade when moving to 11-speed:
- Better gear ratios for climbing and sprinting.
- Compatibility with most modern wheels and cassettes.
- Future-proof setup since new bikes are almost all 11 or 12-speed.
Final Verdict
So, is the Shimano 105 10 or 11-speed? It depends on the generation. Older bikes may have 10-speed, but nearly all current Shimano 105 groupsets are 11-speed, with the latest R7100 going to 12-speed. If you want the best mix of affordability and performance, an 11-speed Shimano 105 is the sweet spot for most riders.
FAQs
1. Can I still use a 10-speed Shimano 105 today?
Yes, but replacement parts may be harder to find. An 11-speed upgrade is more future-proof.
2. Do I need a new wheelset for 11-speed?
Most modern wheels are compatible with 11-speed cassettes, but some older hubs may need an upgrade.
3. Is the new Shimano 105 electronic?
Yes, the latest R7100 is a 12-speed Di2 electronic system, bringing high-end tech to a mid-range groupset.
