<------------------- SOLD -----------------> MAVIC 630 crankset / SR Royal-5 rings - 42/50 double - 144 mm BCD (NOS)

MAVIC 630 crankset (modified) - post 1968 Campagnolo Record compatible 144 mm BCD - 42/50 Black anodized and factory "drilled" Sakae Ringyo (SR) Royal-5 ESL alloy chain rings / no inner reinforcement webs / 50 tooth ring without chain "roll off" pin - 170 mm anodized forged alloy arms / post 1983 and pre 1988 MAVIC solid "block letter" logo (drive side - date code marked "8710EE" for October 1987) / post 1987 MAVIC "open face" logo (non-drive side - date code marked "8807GG" for July 1988) / 9/16" x 20 TPI pedal threads / 22 mm x 1 mm cap threads - model 630 with SR Royal-5 ESL chain rings : Pyramid chain ring bolts - aluminum alloy ... [NOS - while both the chain rings and chain ring bolts are in perfect condition, the crank arms themselves exhibit evidence of light shop wear - in addition, you will note that the "MAVIC" logos on the respective crank arms differ slightly - although they were distributed in one form or another as part of the MAVIC SSC (...Special Service des Courses) group from late 1978 through 1988, these crank arms are actually based upon forgings made by Sakae Ringyo (SR), just as were those late 1970’s to early 1980’s proprietary Raleigh cranks as well as the O.M.A.S. branded cranks dating from that same period. In each of these instances, unfinished SR Royal crank arm forgings were sent along to those respective companies where they were machined, ground, polished, etched, and anodized to preference. As for the MAVIC version seen here, just like their contemporaneous Campagnolo counterparts they have a 144 mm BCD, use a standard 22 mm x 1 mm cap threading, and they even bear a striking physical resemblance. While they would have originally come fitted with their own proprietary labeled Zicral (7075 T6 aluminum alloy) chain rings, lacking those I elected to use a pair of Sakae Ringyo (SR) Royal-5 ESL chain rings exhibiting a factory "drillium" treatment (...a "fitting" substitution if you ask me - pun definitely intended). For whatever it may be worth as background information, the long running 144 mm BCD Sakae Ringyo based MAVIC 630 crankset was eventually superseded in model year 1989 by a French built Stronglight of distinct design having a smaller 130 mm BCD and MAVIC branding which was then designated their model 631, or as it has come to be known colloquially, their "starfish" crankset]