Meta Description: Hands-on test of Ltwoo ER9 electronic groupset on carbon TT bike. Performance vs Shimano Dura-Ace at 1/3 price.
Word Count: 298
When Chinese brand Ltwoo launched the ER9 electronic groupset, skeptics questioned its reliability for serious time trial use. After 500km testing on a T800 carbon frame with enclosed wheels, the results surprised me.
Key Findings:
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Lightning Shifts: The wireless e-shifting delivered 98% accuracy on steep climbs using the ATA 11-34T cassette. Only one chain drop occurred during extreme crosswinds.
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Hydraulic Advantage: Paired with Shimano MT900 discs, the ER9 brakes outperformed mechanical Ultegra in wet conditions (stopping distance reduced by 2.1m at 40km/h).
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Battery Quirk: The FD/RD require separate charging (unlike Shimano/SRAM). Carry the pocket-sized charger during century rides.
Compared to my Dura-Ace Di2 setup:
✔️ 30% cheaper installation
✔️ Easier firmware updates via Bluetooth
❌ Heavier by 317g
❌ Limited compatibility with non-Ltwoo cranks
Pro Tip: For the SENICX PR1 crankset (50/34T), set FD trim to position "B" to prevent chain rub. At $2430 for carbon enclosed wheels + ER9 groupset, this build delivers 90% of pro-level performance at half the cost.
