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LapierrePulsium
01
Origin
The Pulsium is Lapierre's endurance road platform, defined for over a decade by SAT — Shock Absorption Technology — an elastomer block built into the seat cluster (introduced 2012) to filter road buzz before it reached the rider. For 2025 the 4th-generation Pulsium removes the SAT elastomer entirely, replacing it with a '3D Tubular' seatstay design borrowed from the new Xelius DRS: the stays bypass the seat tube and join the top tube, with a deliberate kink to attenuate ~50 Hz road vibration. The result is lighter, more aero and more aggressive than before — Lapierre repositioning a comfort bike into a fast endurance all-rounder.
02
Specifications
- Frame
- UD SL standard-modulus carbon fibre; 992 g raw frame (size M), ~100 g lighter than the 3rd generation
- Weight
- kg
- Drivetrain
- Shimano 2x12: 105 mechanical (5.0), 105 Di2 (6.0), Ultegra Di2 (7.0/8.0); SRAM Rival AXS 2x on 6.0 AXS — mostly electronic across the range
- Brakes
- Hydraulic disc, flat-mount, with 12 mm thru-axles front and rear
- Wheels
- DT Swiss alloy on most builds; flagship Pulsium 8.0 gets DT Swiss ERC 1600 Spline carbon, 45 mm deep, 22 mm internal width
03
The verdict
+Strengths
- Lighter and more aero than the previous generation: ~100 g frame saving (992 g M) and a claimed 5% aero gain / 6.1 W at 50 km/h.
- Generous 38 mm tire clearance with mudguard mounts — versatile enough to stray onto light gravel and all-road.
- 3D Tubular seatstays deliver compliance (claimed ~5.5% more damping) without the maintenance/age concerns of the old elastomer block.
- Sportier, lower geometry plus integrated GPS mount, top-tube bag and fender mounts — built for fast endurance and ultra-distance.
- Mostly electronic-shifting builds (Shimano Di2 / SRAM AXS) at competitive prices for a carbon endurance bike (from ~€2,600).
−Weaknesses
- Stock 32 mm tires don't use the available 38 mm clearance, leaving comfort and grip on the table out of the box.
- Lower stack and more aggressive fit may not suit riders who chose the Pulsium for a relaxed, upright endurance position.
- No internal frame storage despite the endurance/ultra-distance positioning.
- 992 g frame is only modest by current endurance-carbon standards — it is not a featherweight climber.
- Dropping the signature SAT elastomer is a leap of faith: comfort now rests on tube flex rather than the proven damper, and long-term real-world ride feel is not yet broadly reviewed.
04
Who it’s for
Long-distance road rider, sportive/gran fondo, gravel-curious commuter who wants 32–38mm rubber comfort without giving up race responsiveness.
Want one?
Find this bike on the marketplace, or compare notes with riders already on one.