SLR

road– EUR

Origin

Selle Italia launched the SLR (Super Light Racing) in 1999, when race saddles typically weighed 180–190g. At just 135g with a narrow slim profile, minimal padding and a long 275mm shape, it was 25–30% lighter than rivals and was adopted almost immediately by the pro peloton. Selle Italia's philosophy, voiced by president Mr Bigolin, was 'there is no reason to change a concept that works so well' — so across four generations (1999, 2010, 2018 Boost, 2025 Gen 4, the latter overseen by product manager Enrico Andreola) the SLR has evolved rather than been reinvented, keeping its neutral shape and biomechanical reference point intact.

Specifications

Weight: kg

The verdict

+Strengths

Exceptionally light — 109g Racing Replica, 118–143g carbon tiers — genuinely competitive at pro level
Neutral shape fits a broader range of riders than the flat Flite (works for both anterior and posterior pelvic tilt)
Two width options (130/145 mm) across the whole range, sized via idmatch sit-bone caliper
Superflow cutout available for perineal pressure relief on performance variants
25+ years of unbroken WorldTour use and a wide price ladder (€150 Advan to €450 3D Carbon)

−Weaknesses

Minimal padding — firm, race-oriented feel that many riders find uncomfortable for long/relaxed riding
Top tiers are expensive (3D Carbon €450); carbon-rail versions are stiff and unforgiving on rough roads
Racing Replica ultralight padding shows cosmetic wear faster than standard (Selle Italia warns this is normal)
Short Gen 4 length (242 mm) can limit seatpost clamp fore/aft adjustment on some bikes
Not suitable for upright city/touring riders (posterior pelvic tilt) — they should look at Novus or Max

Did you know

01SLR Gen 1 (1999) launched at 135g when competitors weighed 180-190g — a 25-30% weight advantage that made it revolutionary
02The SLR has been present in the professional WorldTour peloton continuously since 1999 — over 25 years of unbroken pro use
03Michael Woods (Israel-Premier Tech) insisted on racing Gen 4 SLR at 2025 Tour de France despite it launching just before the race — trained on it for months specifically
04The SLR Racing Replica at 109g is Selle Italia's lightest production saddle ever — a significant milestone
05Gen 4 length (242mm) is just 2mm above the UCI minimum of 240mm — as short as legally possible for pro racing
06SLR 3D Carbon claimed as lightest 3D printed saddle on market at 137-143g (July 2025). The Carbon DLS lattice is built pillar-by-pillar — variable stiffness from tip to rear without visible discontinuity.
07The lateral wing (added Gen 2, 2010) is structural, not just cosmetic — it sits at the saddle's flex zone and removing it significantly reduces stiffness
08BRP (Biomechanical Reference Point) has been maintained across Gen 3 → Gen 4 — same seated feel despite shorter length and redesigned geometry
09Selle Italia produces 1 million saddles per year and has 128 years of saddle development experience (as of 2025)

Who it’s for

road racer (all levels — entry to WorldTour)Gran Tour / monument ridersportive rider (performance-focused)XC mountain biker (SLR widely used off-road too)rider with neutral or anterior pelvic tiltrider wanting broader fit than Flite

SLR

Origin

Specifications

The verdict

Who it’s for

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