Lapierre’s Zesty was the full gas trail riding benchmark for several years and while other brands have caught up with and sometimes even passed the basic chassis dynamics of the current model, this E:I equipped version is still a great package. E:I is not exclusive to Lapierre – Ghost and Haibike share the technology – but the way it reads and reacts to the trail is on a different level to any other suspension technology.
An accelerometer fitted to the leg of the conventional RockShox Revelation fork tells the E:I processor what size of hit the fork is dealing with. A crank turn sensor in the bottom bracket adds information on pedalling speed and then the E:I processor then works out the ideal compression setting of the rear shock from fully open, platform damped or soft locked according to this impact and pedalling information.
Before the back wheel gets to the same patch of trail, a motor mounted on the rear shock adjusts the valving accordingly. It’s always worked incredibly well for such a sophisticated system and the latest version is even better. The big stem top mounted computer has been replaced by a smaller unit on the side of the stem which communicates current compression mode via a red, amber or green LED and lets you choose between automatic or manual mode selection.
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Lapierre's solid basic chassis is further improved by E:I technology
However clever E:I is, it’s still just an automated compression change mechanism on Lapierre’s already sorted, totally conventional OST+ rear suspension. If you’re happy setting and not forgetting conventional suspension, you could trim your outlay by going for the standard 427 AM, or shave 600g by opting for the slightly pricier carbon mainframe Zesty AM 527.
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