Yuanxing / Xuancheng 10x2.125" Tube Straight/0/45/90 degree

The 10x2.125 tube with straight valve suits 7" rim 10x2.125" tyres such as those on Ninebot F/D series and InMotion Commuter Cruiser. The bent valve versions accommodate 6" rim 10x2.125" tyres, they are the factory stock tube on Kaabo Mantis 10 models that run 10x2.5" tyres.

• The Straight variant:
  • Suits front and rear wheels on models such as:
  • InMotion Climber (10x2.125" tyre), Air and Air Series (Air and Air Pro). Identical to this Scooter Hut offering.
  • Segway Ninebot F Series such as F20, F25, F30, F40 & F65 and D series such as D18, D28, D38 which use the same tyre.
  • e-Glide and Mearth G120 and Mearth S Pro which run a 6" rim 10x2.125" tyre tyre in front (often 0 degree bend tubes are fitted / observed).
  • Counter-intuitively, at 4PSI this tyre has a slightly smaller inner and outer diameter than the 10x2 tube, with internal diameter of 154mm (6"). Despite this is considered the "industry standard" size for tyres on 7" rims (see notes).
  • Yuanxing branded with white nameplate marking YUAN XING 102125-56 and blue line on other side.
  • Weighing in at approximately 100 grams.
  • At 4PSI has internal diameter of 154mm (6.06").
  • Includes captive nut.

• The Bent variants:
  • Available in 3 variants: 0, 45 and 90 degree bend angles, typically paired with sub-2.5" wide 10" tyres such as 10x2.125:
    • The 45 & 90 degree are 104 grams, Superbsail branded with blue ring on underside (understood to be Xuancheng OEM). The 90 degree is easy to identify in product images as having a silver colour valve. The 45 degree (which is also silver) has a slightly shorter length valve than the older brass valve type shown in product images (it is more of the length of the silver 90 degree). Amongst current 90 degree stock, there are a small number of white nameplate Xuancheng branded with designation XUAN CHENG 10x2/2.125, supplied as Kaabo Mantis 10 factory spare (which were supplied with CST 10x3.00-6 tyres - probably not the ideal tube for tyre of that size), if you have preference for the Xuancheng branded leave comment at checkout.
    • The 0 degree (shown in product image with generous length brass valve) is slightly heavier at 120 grams. Observed in non motor hubs on e-Glide and Mearth G120 and Mearth S Pro with the 10x2.125" tyre (6" rim). When stocks exhausted these will progress to the Superbsail L-9.
  • The 45 & 90's are commonly observed as being paired with CST 10x2.5 tyre which is also stock tyre on many T10-DDM models (Zero 10 / 10X, Dragon X10 & MiniWalker), VDM-10 (Dragon Raptor, e-Glide Mach 10, Bolzzen Dynamo / Gladiator), Kaabo Mantis series 10 series and many Inokim makes. Typically aftermarket 10x2.5" tubes are fitted to 10x2.5" tyres.

Notes:

1. Image compares the straight (centre) and 90 degree (right) with the 10x2 tube (left):
   
2. First 9 product images show the bent valve variants, the following 4 images show the straight and last 2 comparison.
3. As a general rule, use 90 degree on motor hubs (except for smaller narrow motors which are typically straight) and 45 degrees on non-motor hubs.
4. As a general rule, for 6" rim hubs running 10x3 tyres (i.e. tyres wider than 2.5), use 10x2.5" tubes which is commonly paired with a Tuovt 10x3 Street or 80/60-6 / 255x80 "Urban Wide" tyre.
5. Xuancheng have a relatively small range of tubes, their catalogue Sept 2014: