Комплект для тюнинга цилиндр + коленвал Stage6 BigRacing 77cc Derbi Euro 3 / 4

Since right from the very start, Stage6 are committed to develop performance-enhancing tuning parts and don’t shy away from tackling new tasks. They are getting into the market for 50cc bikes / supermotos now, this is a tuning pack for Derbi Euro 3 / Euro 4: Комплект для тюнинга цилиндр + коленвал Stage6 BigRacing 77cc Derbi Euro 3 / 4.

Includes:

• 77cc cylinder, aluminium, 50mm bore, with 5 transfer ports and 32mm bridged exhaust port
• 1-ring Vertex piston, d. 50mm
• High compression cylinder head, monobloc, aluminium
• Комплект прокладок (прокладки основания и головки)
• HPC crankshaft original stroke 12mm piston pin
• Crankshaft bearings and oil seals SKF C3 polymer cages

The cylinder features a rather basic and inconspicuous exterior, but we all know that appearances can be deceptive. We’re talking genuine “Big Bore” here – cylinder layout is not based on a modified standard model that was milled open to create a bigger bore, but was designed as a Big Bore right from the start, with matching transfer ports and a bridged exhaust port big enough to support the excess performance.

The BigRacing cylinders impress with ease of installation, outstanding performance, and high reliability.   

– Installation is very easy, crankcase milling or any other modification are not necessary. Squish clearance is pre-set to a value optimized for the respective engine type. 
– In terms of output, the BigRacing cylinders knock it out of the ballpark: we measured a whopping 23 PS и 13 Нм на нашем испытательном стенде P4 с использованием стандартной комплектации (24-мм карбюратор, оригинальное зажигание, гоночный выхлоп и т.д.). 
– Port timings are relatively low, cooling system volume is quite large and the piston is a top quality Vertex piston. All of these factors contribute to the cylinder’s high dependability and robustness, provided that set-up and adjustments are appropriate. 

The exterior is a replica of the original cylinder with a 49cc stamp; don’t worry, this is definitely a 77cc cylinder!

Внимание: For the assembly of this cylinder kit, you have to use longer stud bolts (M7x120mm).

Not road-legal.