51020M - Polished pipe, with ring, 3 chambers, reinforced tube. Robert Batlle used at IFMAR World Championship 2012. Power more gradual and more extension.
51006M - (EFRA 9901) Off-road polished tuned pipe, with ring, 3 chambers, reinforced tube for 3,5cc/4,66cc engines.
51016 - (EFRA 9901) Super Strong: This EFRA 9901( 3 chambers ) is made with stronger walls, to make it more resistant to damage for 3,5cc/4,66cc engines. And at the same time to make your engine more driveable.
51008 - (EX EFRA 9853) 2 chamber tuned pipe with mounting ring and satin finish for 3,5cc and 4,66cc Off-road engines.
51007 (EFRA 2135) - 1/8th off-road polished tuned pipe, with ring, coupled with manifold 41021, allows the same consumption to be maintained further increasing performance.
50015- (EX EFRA 9901) Polished tuned pipe, no ring, 3 chambers for 3,5cc/4,66cc engines.
51018 - (EX EFRA 2084) SUPER STRONG - Polished pipe, with ring, 3 chambers for 3,5cc/4,66cc engines. Softens the engine response at lower RPM.
51020 - (EX EFRA 2096) 3 Chamber, Super Strong polished tuned pipe for 3,5cc/4,66cc engines. Making the power of your engine more useable.
50003 - Black tuned pipe with ring, 2 chambers, left/right exhaust.
50007- Black tuned pipe, no ring, with pressure nipple.
51019 - Polished tuned pipe with ring, 2 chambers, not homologated for use in non-sanctioned events.
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