{"id":100,"date":"2025-10-20T13:46:03","date_gmt":"2025-10-20T13:46:03","guid":{"rendered":"http:\/\/kttservices.dtemp.net\/?page_id=100"},"modified":"2025-10-22T19:46:55","modified_gmt":"2025-10-22T19:46:55","slug":"primary-road-clutch-kit","status":"publish","type":"page","link":"http:\/\/kttservices.co.uk\/index.php\/primary-road-clutch-kit\/","title":{"rendered":"Primary Road Clutch Kit"},"content":{"rendered":"\n

KTT Belt Drive conversions have been successfully tried and tested since 1998. See a recommendation<\/a> of this product, and a recent blog<\/a> on fitting it.<\/p>\n\n\n\n

1,100 kits have been sold throughout the world, including in the UK, USA, Sweden, Australia, Belgium, Germany, France, Denmark, Norway, Holland and Japan. 10% of these kits were race kits.<\/p>\n\n\n\n

Front and rear pulleys are CNC machined from solid HE 30 alloy and hard anodised black to B.S. 5599 for long life. The  belts and the Yamaha R1 kevlar plates can be run wet in oil, or dry as required. The kits are very low maintenance; once correctly set no adjustment is required for a belt.<\/p>\n\n\n\n

Standard Venom ratio 1.9:1 is retained by using a 31 tooth front pulley and 59 tooth rear pulley. The belt is a polyurethane \/ steel AT10 Synchroflex belt with a large 10mm pitch.<\/p>\n\n\n\n

The 20mm wide belt fits neatly inside the original \u2018band\u2019 or \u2018screw\u2019 type Velocette chain-case.<\/p>\n\n\n\n

The road kit also employs the original Velocette shock absorber. KTT Services supply a replacement M89\/8 pulley to replace the sprocket half of the cush drive.  In 2010, the design was changed and you no longer need to send in your M91\/4. As long as it is in reasonable\/good condition, then you are OK.<\/p>\n\n\n\n

An oil seal and holder is bonded to the outside of the drive side crank-case. Kevin uses a solid-setting RTV sealant (ThreeBond 1207B = \u00a316). A major advantage of this kit is that \u2018oil wash\u2019 through the bearing is stopped, so your primary chain case should stop filling up with oil from the engine!<\/p>\n\n\n\n

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Above<\/em>: Belt Drive kit fitted to a Venom engine. Note the retention of the shock absorber drive.
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Above<\/em>: A batch of front pulleys, ready for despatch.<\/figcaption><\/figure>\n\n\n\n
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Above<\/em>: What comes in the box.<\/figcaption><\/figure>\n\n\n\n

Fitting instructions for belt drive kits can be downloaded from the download tab above.<\/p>\n\n\n\n

Primary Belt Drive Road Clutch Kit  Price: GBP<\/strong><\/p>\n\n\n\n

Swinging arm MSS \/ VR \/ VM \/ VMT \u00d825.08mm 9-plate kits              \u00a3595<\/strong><\/p>\n\n\n\n

Rigid  MSS \/ KSS \u00d825.35mm or  \u00d81\u201d drive shaft 7- or 9-plate          \u00a3595<\/strong><\/p>\n\n\n\n

Rigid MAC \/ MOV  \u00d820.63mm or \u00d813\/16\u201d drive shaft 7-plate kits    \u00a3595<\/strong><\/p>\n\n\n\n

Please note that these price increases are due to material cost price increases of \u00a346<\/strong><\/p>\n\n\n\n

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Back To Products<\/figcaption><\/figure>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

KTT Belt Drive conversions have been successfully tried and tested since 1998. See a recommendation of this product, and a recent blog on fitting it. 1,100 kits have been sold throughout the world, including in the UK, USA, Sweden, Australia, Belgium, Germany, France, Denmark, Norway, Holland and Japan. 10% of these kits were race kits. Front and rear pulleys […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"ktts1","meta":{"footnotes":""},"class_list":["post-100","page","type-page","status-publish","hentry"],"featured_image_src":null,"_links":{"self":[{"href":"http:\/\/kttservices.co.uk\/index.php\/wp-json\/wp\/v2\/pages\/100","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/kttservices.co.uk\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/kttservices.co.uk\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/kttservices.co.uk\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/kttservices.co.uk\/index.php\/wp-json\/wp\/v2\/comments?post=100"}],"version-history":[{"count":7,"href":"http:\/\/kttservices.co.uk\/index.php\/wp-json\/wp\/v2\/pages\/100\/revisions"}],"predecessor-version":[{"id":298,"href":"http:\/\/kttservices.co.uk\/index.php\/wp-json\/wp\/v2\/pages\/100\/revisions\/298"}],"wp:attachment":[{"href":"http:\/\/kttservices.co.uk\/index.php\/wp-json\/wp\/v2\/media?parent=100"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}