QUATTRINI SHAFT FOR CRANKCASE C1 STROKE 51Quattrini shaft 51mm stroke, cone 20 and connecting rod 102 for Quattrini C1 crankcase. Quattrini Code: A8348It can be used without any modification neither on the cylinder nor on the crankcase, for cylinders that come out on the Piaggio crankcase in the 97 connecting rod. This is due to the different height of the QUATTRINI crankcases. It mounts 25x52x15 bearings and 24x35x7 oil seals (both available in our store).Quattrini dedicated oil seals with specific characteristics are recommended.Shaft for vespa smallframe (50 special / r / l / n, pk, s, xl, pv, 125 primavera / et3, 50ss / 90ss).Quattrini products have always been synonymous with precision in construction and reliability, if treated as they deserve. For those who know Max, he knows that in his work he puts a constant commitment to continuously renew himself to offer products that are always at the forefront using the best technologies on the market. The results are fantastic on the eye even before they are on the road. The performances are very high and all Vespa tuning enthusiasts can recognize them by now. All Max Quattrini cylinders, like this one and almost all the kits sold on our site, can only be used on the track and never on the road if not properly approved. This and all Quattrini shafts are perfectly balanced to reduce vibrations as much as possible.This and other Quattrini products for smallframe vespa are: M1B D60 GTR (144cc naturally aspirated) M1B D56 GTR (125cc naturally aspirated) M1L D60 GTR (144cc reed valve to cylinder) M1L D56 GTR (125cc reed valve to cylinder) M1L D60 R53 (150cc reed valve to cylinder only for c1 Quattrini crankcase) M200 (200cc reed valve to cylinder only for c200 Quattrini crankcase)for the assembly of this kit it is recommended to also purchase the following items: - CARTER QUATTRINI C1 - VESPATRONIC IGNITION - FRT 8 SPRING RACE CLUTCH - PAIR OF VITON OIL SEALS FOR C1 - PAIR OF BEARINGS C4 FOR SHAFT - M3 R EXPANSIONOur complete engines are also available, some ready for delivery, others customizable by reservation with delivery in about 30 days.Other racing components and complete engines on request are Falc, Malossi, Polini, Bfa and many others. For any request, do not hesitate to contact us by email at motorartretro@gmail.com or by phone / whatsapp at +393755789138.If you have questions about our products, direct assistance is always available via whatsapp or by call, we will be available to clarify any doubts.