The Grand Prix 4000S has had a facelift. The 4000S II gets a Vectran breaker for unsurpassed puncture protection and Continentals advanced Black Chili compound for lower rolling resistance and increased grip. The discreet coloured bead strip allows you to colour coordinate the tyre to match your bike perfectly without losing the BlackChili tread performance. The GP4000 S II is versatile enough for race wheels or training wheels. Continental have also expanded the size range with an additional 28 mm version added (contact for details). This provides improved grip in poor riding conditions, increased puncture protection and greater comfort. The proven aspects of the 4000 S II remain unchanged and handmade in Germany of course.
- Advanced BlackChili compound for low rolling resistance, high mileage and maximum wet weather grip
- A proven tyre with a facelift, new colours, new design, tried and tested technology
- Vectran„¢ breaker for unsurpassed puncture protection
- Available colours (23mm): black
- Recommended pressure: 110psi
- Maximum pressure: 120psi
- Sizes:
- Weights:
- 215g (700 x 23)
- 225g (700 x 25)
- 235g (700 x 28)
Vectran is a synthetically manufactured high-tech fibre from a natural model. Like spider silk, Vectran is a liquid-crystalline polymer (LCP). Vectran is spun from melted liquid polymer Vectra and processed further to a multi-strand thread. Spider silk, like Vectran, has an enormous tear resistance at a very low weight exactly the right properties to process into a premium Continental bike tyre as a puncture protection insert. A Vectran Breaker is lighter, more flexible and protects more effectively against cuts than the comparable nylon breaker. Vectran Breaker does not adversely affect the rolling resistance.
Continental refine newly developed synthetic rubbers with natural rubber with the proven high-performance tread compound. They use these rubbers with special nanometric carbon soot particles, which are optimized in shape and surface properties for best uses for the intended tyre. BlackChili Compound reaches an unprecedented of performance. Tyres with BlackChili Compound reach an unprecedented level of performance. Compared to the previous best Activated Silica Compound, BlackChili tyres have 26% less rolling resistance, a 30 % higher friction value (grip) and a 5 % increase in mileage.
I recently took my dated and tired old racing bike along to Leeli Cycles for some much needed work. I was cheerfully greeted by Ben the very friendly owner and number one mechanic. He suggested a full service and looked over the bike to access the condition of the other cycle components. A very comprehensive quote was later emailed to me listing all the parts that Ben would require to complete the job. He phoned me as soon as my bike was ready and I hurried along to pick it up. My first reaction was, wow! It looked as good as new and fully roadworthy again. Ben had done an incredible job in transforming my old racer back to its former glory! I'm very pleased to have used Leeli Cycles along with Ben's wealth of mechanical knowledge, sound advice and attention to detail. Even happier still to support this amazing small local business offering great value and excellent customer service. An outstanding shop in every way for all your cycling needs with the personal touch. Pop in and see for yourself. I guarantee you won't be dissapointed.
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