The 90/65-6.5 tube is one of the most common tubes on X11-DDM models of Zero 11X and other ODM's Dragon Hunter X11 and Black Edition 11X as well as the VSETT 11+.
With a valve of 90 degree angle and 90 degree tilt (90/90) and located well off-centre in a choice of two variants: the genuine CST and a lower cost TurboTube version:
CST167 grams - non-reinforced valve (as shown in product images with silver colour stem). White nameplate with marking of CST logo and 90/65-6.5, black mould marking ITM906565.
TurboTube - reinforced valve, with brass colour stem in choice of weight:
170 grams
190 grams (clearance stocks of older production batch - will go EOL as transition to 170g).
White nameplate 90/65-6.5 A with black mould marking 906565.
Traditionally paired with CST's tube type 90/65-6.5 tyres or wherever an off-centre, 90/90 valve shape is desired.
Notes:
In some instances a 45 degree tube is more appropriate than 90, due to location of the valve hole. Image below shows hub with valve hole facing outwards (a tubeless hub), rather than toward the axil shaft (typical of tube type). With a 90 degree tube there is poor ground clearance. This one is marginal given it is a relatively short (shorter than the CST and TurboTube 906565) and only 70 degree tilt.A 90/90 would rub sidewall and/or stress the valve. This is explained on the 100/90/65-6.5 Tube page, which has a 45 degree variant.
Both tubes have a blue ring marking on "underside".
The brass colour valve stem will usually trend to black with oxidisation.
215 grams, 80 degree tilt, suits 6.5" rims running the larger 11" sizes including as 105/50-6.5, 105/65-6.5 and 110/55-6.5 or where heavy tube desired.
55mm at bead, 25PSI, suits 6.5" rims of NAMI Burn-e, Kaabo Wolf Warrior 11>, Dragon Hurricane, Lightning, The Beast & Rear of Predator 6.5", Zero 11X & VSETT 11+.
60mm at bead, 24PSI, suits 6.5" rims of NAMI Burn-e, Kaabo Wolf Warrior 11>, Dragon Hurricane, Lightning, The Beast & Rear of Predator 6.5", Zero 11X & VSETT 11+.
60mm at bead, 24PSI, suits 6.5" rims of NAMI Burn-e, Kaabo Wolf Warrior 11>, Dragon Hurricane, Lightning, The Beast & Rear of Predator 6.5", Zero 11X & VSETT 11+.