2014 X Fusion RV1 DH Forks

These have just landed in the office ready for testing. First impressions from the Dirt HQ are that the Carbon fork guards could improve the longevity of the fork and save it from uplift battle scars, they seem pretty responsive too, but we’ll put them through their paces and see how they fare with other contenders.

20131028_151039_Richtone(HDR)_resizedX Fusion have allowed for 26 and 27.5 wheel sizes, as well as offering adjustment options, the RV1 offers:

  • The HLR damper is a twin-tube, cartridge based damper which features high and low speed, independently adjustable compression and rebound damping adjustment.
  • Carbon fork guards protecting the magnesium lower legs.
  • Neutra Valve pressure release valves to neutralize internal pressure providing the most consistent spring rate characteristics.
  • Nvolve Wiper seals reducing seal drag and increasing durability
  • Single Bolt 20mm Pinch Axle
  • Optimized Dual Crowns for 26 and 27.5 inch wheels
  • Clip on frame guards

We spotted a pair of these at Eurobike earlier this year:

Weight: 6.1lbs/2767 grams
Wheel Size: 26 inch or 27.5 inch
Travel: 200mm (ITA 180-200mm)
Stanchion: 36mm Aluminum
Spring: Coil
Damper: Twin Tube HLR Cartridge
Adjustments: High and Low Speed Compression, Rebound
Steerer: 1 1/8th Dual Crown
Axle: Bolt-On 20mm
Features: Neutra Valves, Fork Guards
Colors: Matte Black, Smoked Chrome
Axle to Crown: 26in. 569mm, 27.5in. 579mm @ 200mm of travel
Offset: 26in. 42mm, 27.5in. 46mm
Max Rotor Size: 203mm

The X Fusion guys are confident that the RV1 HLR Forks can hold their ground against forks currently on the market. They will be available to buy in the UK next year. The US prices are:

RV1 HLR (Matte Black) $1399.99 US

RV1 HLR (Smoked Chrome) $1449.99 US

UK Prices will be in the magazine once we’ve tested them out.

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  1. Sam

    Pretty light for a coil fork.

    1. Mark

      Weighed without guards, axle, crowns….. and probably the coil in question too ;-)

      1. Marko

        Well, the Metric is basically the same fork.It doesn’t have the upper crown (but the one it has is beefier)and has an air spring and it weighs 2330g (exactly a lb lighter) with everything attached and an uncut tapered steerer.
        Now do the math to see if that RV1 weight is realistic or not.

  2. GABE

    These look pretty sweet. And when they are charging similar prices to the big guns they ought to look pretty sweet too. Few Q’s spring to mind…
    1)I’d be interested to see what (if anything) they have done to stop the axle rotating in the left hand dropout.
    2)That anodizing looks pretty light in colour. Not a very thick coat, or just light coloured?
    3)Are they avaliable without the pointless guards and overcomplicated air bleed ports?
    4)Whats under the cap at the bottom of the left leg?

    Anyone got any thoughts/info?

    1. Oz

      Looks to me like there is a flange on the right hand end of the axle. The left hand dropout must be threaded. So, you tighten up the axle from the left end, clamping the hub between the two dropouts, then tighten up the pinch bolt to stop it coming undone. Seems like a pretty straightforward solution to me. I guess the axle could move in the threads under high twisting forces but the friction in the threads and the pinch bolt on the opposite leg should prevent this. The Maxle 2 works on the same principle but without the pinch bolt.

      1. Oz

        Edit – meant to say ‘tighten from RIGHT end’ doh!

      2. gabe

        thats pretty much exactly the same conclusion I came to. Pinch bolts on the right, threaded in on the left. Considering the main purpose of 20mm axles over anything smaller is to resist twisting of the forks, allowing the axle to rotate in the left hand dropout seems a bit silly. thread friction will do very little to combat this. Maxle does rely on a thread, but also an expander wedge to force the sides of the axle against the dropout. If this axle doesn’t use any sort of expander wedge then it should. otherwise it will not be doing the job it is intended for. Saying that, maxle is a crap solution for lazy people. Pinch bolts are better. I have seen claims that maxle actually provides moer friction than pinch bolts. And claims that collet clamps provide more friction than pinch bolts. And claims that wedge clamps on stems provide more friction than pinch bolts. In all my years as a mechanic, pinch bolts have rarely ever caused me a problem. All the other systems have either provided major headaches or major bent forks.

  3. Adam John Gray

    Nothing under the other cap, its there so that you can rest your bike without the front wheel in, and it won’t fall over.

    1. Gabe

      hahaha! good joke. but no really…wait, was that a joke? i really hope thats not the actual reason its there. There must be something under there right?

  4. Leon

    They could save money by not giving you over 1 foot of steer tube!

  5. gabe

    *Edit* Not all Maxle axles use expanders at both ends. I guess not all Maxles are created equal. But seriously, through axles really need to be gripped at both ends if you want any improvment in stiffness. But hey, if you like bending lowers by the shedload, don’t worry about it. It certainly looks neater without those ugly pinch bolts.

    1. nick

      How exactly is a single pinch bolt insufficient? With the axle clamped at a single end it will not be able to back off or move at all.

      IMO, adding a second pinch bolt will have no effect on the rigidity of the lowers.

  6. gabe

    cos the axle will still be able to rotate in the non pinched dropout, allowing the legs to move independently of each other. Imagine gripping a bar sollidly with both hands, compared to solidly in one hand and loosly in the other.Both work, but one is obviously more effective. Torqueing the hell out of the axle will help a little but its not very nice. I always think, if you want to see something done in fancy ways that look nice and save on tools, perhaps knock a gram off here or there, more often than not adding useless weight, look at mtbs. If you want to see something done in a way that works, and lasts for many years of abuse, look at mx bikes. mx bikes use two pinch bolts at the bottom of each leg. Cos it works. I’m not trying to say “mx is soo cool and I wanna be like them”, its just that they’ve been doing it far longer. most of the gimmicks have been and gone, just the sensible, simple stuff that works left. Unfortunately mtb is still young enough to be won over by fancy tool free, self adjusting, autogizmo doodahs that fall apart after 2 years. Or work just fine, but are more complicated and less efective than the thing they are designed to replace. Like Maxle. Or any suspension system with more pivots than an fsr. I’m looking at you Cube…

X

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