Q: About the head tube and headset
A: The XPZ's head tube size is 1.1/8" on top and 1.5" at the bottom.
     Please refer to below pictures. Despite the head set is nothing too special, it may be difficult to buy this combination from a normal bike shop.  We therefore provide this head set.
     This head set comes with 2 kinds of cone, so that you can use either the conventional fork of   1.1/8" steerer, or the new-type fork of taper steerer (1.5" at the bottom).   If you need this headset, please feel free to let us know.
Please refer to below pictures. Despite the head set is nothing too special, it may be difficult to buy

Q: Warranty
A: The warranty of the frame is 1.5 year after delivery.
    

For the fork
Q: What's the installation length for the fork? ~545mm? You just wrote 160mm travel forks. Does it work with Rockshox
     Recon (509mm) or Pike (518mm)
A: The following chart shows some popular forks available in the market that we recommand to assemble to the XPZ frame.
    The chart also shows the relative change of the head tube angle and the seat tube angle when installed with different forks.

Q: What is the weigth of the M size frame (including FOX RP23)?
A: The weight for XPZ in M size with RP-23 shock and seatpost clamp is 3.33kgs.

Q: What is the wheelbase?
A: The wheelbase is 1138mm with Rockshox Lyrik fork (set at 160mm travel), or 1134mm with Fox 36 fork (set at 160mm travel).

Q: What's the rear end size? 135mm or 150mm?
A: The rear end width is 135mm.

Q: Is it ready to get the headset and bottom bracket in or is it necessary to refinish the frame? (Milling the Head tube...)
A: You don't need to mill the head tube or the BB, because we have machined these two parts after heat treatment.

Q: What is the frame finish? Is it paint or anodized?
A: It is paint finish, not anodized.

The XPZ's very dedicated 4-bar-linkage provides a near-perfect virtual pivot location and a virtually vertical rear wheel axle swinging path.  These words may sound familiar (or even boring) on other's 4-bar bikes but in reality very few or none of them ever reached this sweetspot of outstanding pedaling-efficiency and exceptional suspension performance.  And now Xtensioni even lifts the bar to a newer level with our all new XPZ all-round MTB.  Joined by Xtension's new cutting-edge designs and technologies, the new XPZ is not only shaved by over 1.3lbs (600g!) from its predecessor, but gained over 37% on the overall strength at the same time.  The magical combination of a much lighter weight and a much stronger strength results in a much faster speed that seldom or never happened on a long-travel all-round bike in its class before.  Never a long-travel all-round MTB could be this light, agile, active and fast but still owns the respectable strength and the decent suspension performance needed for the most demanding challenges on the trail.  Only the new XPZ can make it, both up and down.

Xtension's XEZ is driven by Xtension's dream PVP suspension. The forward-and-uprising virtual pivot of PVP immediately and smartly eliminates the bobbing effect when both seated and standing, giving the rider overwhelming  confidence and freedom to pedal this speed rig forward, just as bravely and freely as on a hardtail. While the vertical rear wheel path delivers a very neutral and manageable suspension manner, absorbing the bumps from the terrains dutifully and elegantly. Sounds too sweet? Try on and fall in love with it.

HydroLite Downtube

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One-piece Upper Link

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Hi-strength Upper Link Area
The new XEZ received a new strut on the upper link area, which largely improves the strength of this area and the response of the PVP suspension.

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Dream PVP Suspension

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Beefier Lower Link

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3D-Strut Rear Triangle
The new 3D-Strut rear triangle not only provides a better strength but links the ground response to the rider more directly and clearly.

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All-New 3D Dropout

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Famous for its agile handling and silky-smooth suspension action, the Xtension XTM offers truly 10"  travel that inspired you to face any possible challenge in the front.  The  Box Backbone section is the secret of its awesome  strength and handling, while purposely designed 4-bar-linkage suspension offers the best  pedaling of its kind.  Low standover height gives the rider free mind to win the race without  extra concerns.

Strength is Everything

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Hi-strength BB & Yoke

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Optimized 4-Bar Susp
XTM 4-bar-linkage is purposely tuned for DH use, and makes  climbing not only possible but capable on this 10"-travel DH bike.

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CNC 3D Dropout

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ISCG Adaptor
The new XTM receives a new ISCG adaptor, which is favorable for those extreme riders who want a more silent and reliable drive underneath his legs.

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Mono-coque Top Tube
Not only looks stylish but provides as awesome strength as its look.

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Reinforced Rockerarm
XGR's massive rockerarms are CNC machined from one-piece high-grade alloy brick, then beam-shut treatment, then reinforced by two oversized  torque-enhancement bolts in between, providing the strongest and most  responsive suspension in its class.

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Bottom Bracket Area
Rectangular downtube, one-piece lower shock mount, beefy chainstay  yoke and oversized main pivot axle, all complete a very high strength  level in this critical power-delivering area.

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CNC 3D Dropout
The 3D dropouts hold the rear tire to the ground solidly, and deliver a very clear and direct response to the rider..

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ISCG Adaptor
The new XGR receives a new ISCG adaptor, which is favorable for those extreme riders who want a more silent and reliable drive underneath his legs.

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When speed is above everything, nothing is faster than lighter and stronger. Thanks to our new magic alloy that performs the best strength-to-weight ratio of all, Xtension XCD achieves a remarkable weight number that few other metal competitors can image. More impressive is its strength after all these gram shavings, so much stronger than those competitors in black-plastic. The XCD propels your speed forward in a rock solid manner.

We all know clipless pedals are one of the greatest inventions in MTB history, but we also understand not every rider is talent enough to pilot the clipless pedals safely and confidently, or just needs a pair flat pedals in extreme conditions.  However, it is too ifficult for us  to adapt to those obsolete looking and poor performing non-clipless pedals on the market, so here we ave the X-PEDAL Series as our choice.  We believe you will love it as much as we do.

A patented truly modular design offering customization and serviceability. From the initial concept to the finished product, all of the components were not only designed to be replaceable but they were designed to make it easy. XANDWICH's monocoque design is the key. We have created a pedal that achieves it's strength and style from a stressed skin.

A patented truly modular design offering customization and serviceability. From the initial concept to the finished product, all of the components were not only designed to be replaceable but they were designed to make it easy. XANDWICH's monocoque design is the key. We have created a pedal that achieves it's strength and style from a stressed skin.