O.S. SPEED R 2104 ENGINE 3.5CC – 9 PORTS

O.S. ENGINE MAX R21 GT- 5 PORTS – TUNED VERSION

1203 O.S. ENGINE GOLD EDITION STANDARD

COOLING HEAD 2.1 CC ONE .12

BUILT UP PARTS SET COMPLETE O.S. GT ENGINE MAX R21 5 PORTS – TUNED

UNDERHEAD ONE.21 Ø37.9 + SHIMS

VENTURI KIT ONE Ø 9

REAR BEARING GT XRD BASED 3,5CC Ø14,2X25,4X6,3 mm 9 STEEL BALLS

REAR BEARING 3.5CC CERAMIC 9 BALLS 14X25.4X6

COVER PLATE 3.5CC FOR ONE ENGINE – O.S. SPEED .21 R21

CONROD 3.5CC ONE ENGINE – O.S. SPEED .21 R21

 ONE COMPETITION FUEL 16% PRO; 16%; 25%