The Grand Prix 4000 S II is the reference tyre in the road bike
market and has gone through numerous stages of evolution.
Our flagship tyre now gets a facelift! The discreet bead strip
allows us to colour coordinate the tyre to match your bike
perfectly without losing the BlackChili tread performance.
We have also expanded the size range with an additional
28 mm version added. This provides improved grip in poor
riding conditions, increased puncture protection and greater
comfort. The proven aspects of the 4000 S II remain
unchanged. Vectran™ Breaker for unsurpassed puncture
protection, advanced BlackChili Compound for low rolling
resistance and sensational grip, and handmade in Germany
Vectran™ is spun from Vectra liquid crystal polymer, which
results in a thread that is thermoplastic and has multifi laments.
This semicrystalline material is harder then aramid, has five
times higher tensile strength than steel and in addition, is also
lighter than comparable nylon thread. Vectran™ maintains
these attributes even in the most adverse weather conditions.
PSI - Rec.
PSI - Max
700 x 23C
700 x 25C
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