RFX Pro Series – Chain Tensioners (manufacturer part number: FXAB5040099RD). Designed for the motocross rider who wants to speed up wheel change operations while achieving precise alignment, these tensioners make work in the paddock and workshop easier. Anodised red finish, suitable for off-road machines such as the KTM 65 SX (2025 / 2026).
Technical Specifications
- CNC machined from 7075 aerospace aluminium for a good strength-to-weight ratio.
- CAD-designed profile to reduce mass without sacrificing fit.
- Axle support allowing one side to be held for tightening with a single wrench, convenient for racing.
- Laser-etched RFX logo and coloured anodisation for a factory finish.
- Tight tolerances for a precise fit on the swingarm and spacers.
Installation & Use
- Lift the motorcycle on a stand and raise the rear wheel.
- Remove the axle and old tensioners, position the new RFX tensioners, and reinsert the axle.
- Adjust the alignment and chain tension according to the manufacturer's manual, then tighten the axle nut to the specified torque.
Part designed for the terrain: lightweight, clean, and ready to handle quick paddock passes for smoother chain maintenance.
30 days returns
Help and contacts
Motorbike
Log in
Basket
'%3e%3cpath%20fill='%23f1ab00'%20d='M.702%207.162l1.875%201.684%206.161-5.532L14.9%208.846l1.875-1.684L8.738-.053z'/%3e%3c/g%3e%3c/g%3e%3c/svg%3e)
Secure payments
;}.cls-1,.cls-2,.cls-3,.cls-4{stroke-width:0px;}.cls-2{fill:%231e3764;}.cls-3{fill:url(%23Bancontact_geel_rgb);}.cls-4{fill:%23fff;}%3c/style%3e%3clinearGradient%20id='Bancontact_blauw_rgb'%20x1='10.63'%20y1='11.48'%20x2='20.14'%20y2='7.95'%20gradientUnits='userSpaceOnUse'%3e%3cstop%20offset='0'%20stop-color='%23005ab9'/%3e%3cstop%20offset='1'%20stop-color='%231e3764'/%3e%3c/linearGradient%3e%3clinearGradient%20id='Bancontact_geel_rgb'%20x1='21.79'%20y1='9.08'%20x2='31.88'%20y2='5.64'%20gradientUnits='userSpaceOnUse'%3e%3cstop%20offset='0'%20stop-color='%23fba900'/%3e%3cstop%20offset='1'%20stop-color='%23ffd800'/%3e%3c/linearGradient%3e%3c/defs%3e%3cg%20id='Calque_1-2'%3e%3crect%20class='cls-4'%20width='42'%20height='24'%20rx='2'%20ry='2'/%3e%3cpath%20id='Bancontact'%20class='cls-2'%20d='M8,19.49v-3.76h1.16c.84,0,1.38.32,1.38.97,0,.37-.17.63-.41.78.35.16.55.47.55.9,0,.76-.55,1.11-1.41,1.11h-1.27ZM8.75,17.29h.55c.34,0,.48-.17.48-.47,0-.33-.26-.43-.62-.43h-.42v.91ZM8.75,18.83h.46c.45,0,.71-.11.71-.47s-.23-.49-.65-.49h-.53v.96ZM12.13,19.55c-.74,0-1.11-.36-1.11-.84,0-.53.43-.84,1.08-.85.15,0,.34.02.48.04v-.13c0-.33-.19-.48-.55-.48-.24,0-.49.04-.71.13l-.13-.58c.23-.1.6-.16.93-.16.79,0,1.18.42,1.18,1.14v1.49c-.22.11-.63.24-1.17.24ZM12.58,18.94v-.57c-.12-.03-.25-.04-.38-.04-.25,0-.44.1-.44.35,0,.23.16.34.45.34.16,0,.3-.03.38-.08ZM13.82,19.49v-2.57c.34-.14.8-.24,1.21-.24.78,0,1.23.39,1.23,1.1v1.71h-.74v-1.65c0-.37-.17-.54-.5-.54-.17,0-.33.03-.47.1v2.1h-.74ZM18.85,16.84l-.14.58c-.2-.09-.42-.13-.61-.13-.43,0-.67.31-.67.81,0,.55.25.84.71.84.18,0,.39-.05.6-.14l.12.6c-.18.09-.46.16-.77.16-.89,0-1.41-.55-1.41-1.43s.51-1.44,1.36-1.44c.31,0,.61.07.81.16ZM20.45,19.55c-.83,0-1.34-.57-1.34-1.44s.52-1.43,1.34-1.43,1.34.57,1.34,1.43-.5,1.44-1.34,1.44ZM20.45,18.94c.38,0,.58-.32.58-.83s-.2-.82-.58-.82-.58.32-.58.82.21.83.58.83ZM22.22,19.49v-2.57c.34-.14.8-.24,1.21-.24.78,0,1.23.39,1.23,1.1v1.71h-.74v-1.65c0-.37-.17-.54-.5-.54-.17,0-.33.03-.47.1v2.1h-.74ZM26.33,19.55c-.64,0-.97-.35-.97-1.06v-1.16h-.36v-.59h.36v-.6l.74-.04v.63h.6v.59h-.6v1.15c0,.31.13.46.37.46.11,0,.21-.02.28-.03l.04.6c-.13.03-.3.05-.47.05ZM28.2,19.55c-.74,0-1.11-.36-1.11-.84,0-.53.43-.84,1.08-.85.15,0,.34.02.48.04v-.13c0-.33-.19-.48-.55-.48-.24,0-.49.04-.71.13l-.13-.58c.23-.1.6-.16.93-.16.79,0,1.18.42,1.18,1.14v1.49c-.22.11-.63.24-1.17.24ZM28.65,18.94v-.57c-.12-.03-.25-.04-.38-.04-.25,0-.44.1-.44.35,0,.23.16.34.45.34.16,0,.3-.03.38-.08ZM31.91,16.84l-.14.58c-.2-.09-.42-.13-.61-.13-.43,0-.67.31-.67.81,0,.55.25.84.71.84.18,0,.39-.05.6-.14l.12.6c-.18.09-.46.16-.77.16-.89,0-1.41-.55-1.41-1.43s.51-1.44,1.36-1.44c.31,0,.61.07.81.16ZM33.53,19.55c-.64,0-.97-.35-.97-1.06v-1.16h-.36v-.59h.36v-.6l.74-.04v.63h.6v.59h-.6v1.15c0,.31.13.46.37.46.11,0,.21-.02.28-.03l.04.6c-.13.03-.3.05-.47.05Z'/%3e%3cpath%20id='blue-symbol'%20class='cls-1'%20d='M13.16,13.85c3.92,0,5.88-2.61,7.84-5.22H8v5.22h5.16Z'/%3e%3cpath%20id='yellow-symbol'%20class='cls-3'%20d='M28.84,3.4c-3.92,0-5.88,2.61-7.84,5.22h13V3.4h-5.16Z'/%3e%3c/g%3e%3c/svg%3e)
'%3e%3cpath%20fill='%23FFFFFF'%20d='M0%204.053l1.054.946%203.461-3.108L7.976%205l1.054-.946L4.515%200z'/%3e%3c/g%3e%3c/svg%3e)
French
Spanish
Italian
Dutch
German'/%3e%3c/g%3e%3cg%20id='eu-c'%3e%3cuse%20xlink:href='%23eu-b'%20transform='rotate(72)'/%3e%3cuse%20xlink:href='%23eu-b'%20transform='rotate(144)'/%3e%3c/g%3e%3cuse%20xlink:href='%23eu-c'%20transform='scale(-1%201)'/%3e%3c/g%3e%3c/defs%3e%3cpath%20fill='%23039'%20d='M0%200h640v480H0z'/%3e%3cg%20fill='%23fc0'%20transform='translate(320%20242.3)scale(23.7037)'%3e%3cuse%20xlink:href='%23eu-d'%20width='100%25'%20height='100%25'%20y='-6'/%3e%3cuse%20xlink:href='%23eu-d'%20width='100%25'%20height='100%25'%20y='6'/%3e%3cg%20id='eu-e'%3e%3cuse%20xlink:href='%23eu-d'%20width='100%25'%20height='100%25'%20x='-6'/%3e%3cuse%20xlink:href='%23eu-d'%20width='100%25'%20height='100%25'%20transform='rotate(-144%20-2.3%20-2.1)'/%3e%3cuse%20xlink:href='%23eu-d'%20width='100%25'%20height='100%25'%20transform='rotate(144%20-2.1%20-2.3)'/%3e%3cuse%20xlink:href='%23eu-d'%20width='100%25'%20height='100%25'%20transform='rotate(72%20-4.7%20-2)'/%3e%3cuse%20xlink:href='%23eu-d'%20width='100%25'%20height='100%25'%20transform='rotate(72%20-5%20.5)'/%3e%3c/g%3e%3cuse%20xlink:href='%23eu-e'%20width='100%25'%20height='100%25'%20transform='scale(-1%201)'/%3e%3c/g%3e%3c/svg%3e)
Others
