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01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 08-054 REPLACEMENT CLUTCH PLATES FOR PRIMO PROCLUTCH Over the years Primo/Rivera have changed the construction of stock replacement Pro-Clutches, as well as Pro-Clutches as supplied with Brute Classic, Brute III, and Brute IV belt drives. The early style Pro-Clutch had a clutch hub with integrated steel rear plate, the late style Pro-Clutch have a hub and separate rear plate. Please note that Pro-Clutches used for stock replacement and the Pro-Clutch as supplied with a Primo belt drive are NOT the same! BARNETT DIAPHRAGM CLUTCH SPRING FOR 19841989 BIG TWIN Barnett's replacement spring for all diaphragm type clutch equipped Evolution Big-Twins 1984 thru 1989. Produces a significant increase in lever pressure. Strongly recommended for High Performance and competition engines (OEM 37902-84A). 232505 Diaphragm spring plate ALTO DIAPHRAGM SPRING PLATE FOR 1984 THRU 1989 BIG TWINS This Heavy-Duty replacement diaphragm plate is designed for use with high powered engines. It provides a significant improvement in plate pressure without too much increase in lever pressure (OEM 37871-84). 238650 Alto diaphragm spring plate DIAPHRAGM CLUTCH SPRING Heavy-Duty replacement spring plate for all diaphragm type clutch equipped Evolution Big Twins 1984 thru 1989. Strongly recommended for high performance and competition engines because of its significant increase in lever pressure (OEM 37871-84). 149424 Diaphragm spring plate Fits late 1984 thru 1989 Big Twins 232501 Steel drive plate, sold each, 7 used per bike (OEM 37975-84) BARNETT STEEL DRIVE PLATES Barnett steel drive plates are made of tough, high tensile steel to reduce warpage problems. Can be used in conjunction with OEM, Barnett or Zodiac friction plates. Fits late 1984-1989 Big Twin. Can be used with OEM or aftermarket steel drive plates. 232566 Kit consists of 6 Kevlar bonded steel friction plates. The plates are wider than stock and provide 25% greater surface contact area (OEM 37930-84) "SERIESK96" KEVLAR CLUTCH KITS Barnett is leading the wave of the future with the development of these smooth working, long lasting "Series-K96 Kevlar" clutches. Test results show that Barnett's asbestos free "Series-K96" clutches lasted 12 times longer than asbestos clutches and 3 times longer than semi-metallic. Fits late 1984-1989 Big Twin 721920 Kit consists of 6 wider than stock Carbon Fiber lined friction plates that provide 25% greater surface contact area (OEM 37930-84) BARNETT CARBON FIBER CLUTCH KITS Barnett has always been number 1 of technology designing innovative clutches to meet the specific demands of street and racing motorcycles. The latest innovations are these Carbon Fiber clutches that provide high static and dynamic friction coefficient for smooth, positive engagement and release. They are designed for use in conjunction with OEM or Barnett steel drive plates. Available as kits that fit like stock, but also as "Extra-Plate" kits for use in High Performance applications. ADJUSTER PLATE FOR 19841989 BIG TWIN CLUTCHES Heavy-Duty, die cast adjuster plate, which minimizes wear factor. Can be used with OEM spring or any aftermarket spring. Fits 1984-1989 diaphragm clutches (OEM 37902-86). 740569 Adjuster plate INNER CLUTCH HUB This replacement inner clutch hub includes an improved tapered sleeve to prevent it from splitting at the key-way as it would on the original design. Incudes a clutch hub re-inforcement washer. Fits 1984 thru 1989 Evolution Big Twin models. 144506 Inner clutch hub (OEM 37550-84A) ALTO STEEL DRIVE PLATES FOR 1984 THRU 1989 BIG TWIN Kit consists of 7 steel drive plates, which are also available separately. Plates are .047" (1.2mm) thick(OEM 37975-84A). 238648 Steel plate kit (7 plates) 238671 Steel plate (each) STEEL CLUTCH PLATE Fits 1984-1989 Evolution Big Twin with diaphragm clutch. 7 used per bike (OEM 37975-84). Sold each. 149416 Steel disc P�I�A�Y LATE 19841989 BIG TWIN 5SPEED CLUTCH