Zipp has rolled out an all-new vary of light-weight carbon mountain bike wheels for XC and lightweight path using. There are two wheelsets introduced at present; the Zipp 1ZERO HiTOP SW, and the 1ZERO HiTOP S, each boasting the identical extremely compliant rim mentioned to assist carry velocity via tough terrain, and speed up rapidly out of corners.
The SW and S fashions share the exact same shallow (21.2mm) rim with a 30mm inner width, which has lately grow to be the go-to rim depth for XC racers around the globe. The wheelsets differ of their hubset specs, spokes and nipples. The highest-end HiTOP SW is bought with the brand new Quarq TyreWiz 2.0 (extra on that right here), and is after all the costlier choice.
Regardless, each are supposed for XC racing, mild path using, hardtail using or full suspension bikes with as much as 130mm of rear wheel journey. And, each are bought with a lifetime guarantee. Right here’s a short overview of Zipp’s new carbon cross-country wheels.
Zipp HiTOP Carbon MTB Rim
The Zipp 1ZERO HiTOP carbon rims get an uneven profile with a hookless rim bead seat design with a 30mm inner width. The beneficial tire measurement is 2.3″ to 2.5″, although 1.85″ to 2.8″ tires would even be permitted. The exterior width on the rim edge is 37.7mm, giving that high edge a thicker wall that type of overhangs the remainder of the rim wall within the outboard course. Zipp says this helps to cut back the possibilities of a pinch-flat.
The Zipp 1ZERO HiTOP are bought as particular person wheels solely, with no rim-only choice obtainable.
1ZERO HiTOP SW
The 1ZERO HiTOP SW wheels are Zipp’s premium providing. Zipp promote each entrance and rear wheels with the Quarq TyreWiz 2.0 (value $150 USD), giving the rider prompt entry to correct tire strain readings. The entrance will set you again $925 USD (£950), whereas the rear will value you $1,025 USD (£1,050).
- Wheels: Zipp 1ZERO HiTOP SW
- Rim Inner Width: 30mm rim
- Rim Exterior Width: 37.7mm
- Spoke Depend: 24
- Hubset: ZM2 SL Hub
- Driver Choices: XD and Microspline
- Enhance solely
- Claimed Weight: 1,325 grams
On the coronary heart of the HiTOP SW is the brand new ZM2 SL hub boasting 66 POEs, with drive engagement coming no later than each 5.45°. It runs the exact same drive mechanism seen contained in the Zipp ZR1 street hubs. That’s a 33-tooth ratchet ring, pushed by one in all two units of spring-backed pawls which might be offset of their timing. That successfully doubles the 33 POEs to 66 POEs for sooner pick-up. That’s one thing that ought to show to be advantageous in technical climbing situations.
The ZM2 SL hubset is center-lock solely. Twenty-four spokes of the Sapim CX Ray selection lace it to the rim, terminating at aluminum nipples. The entrance hub is appropriate with each customary 19mm thru-axle end-caps, and 31mm RockShox Torque caps. The Torque Cap is available in two separate items to permit compatibility with the CL brake rotor.
1 ZERO HiTOP S
The Zipp 1ZERO HiTOP S Wheels are the extra reasonably priced of the 2 choices introduced at present. A set will put you again $1,350 USD (£1,400); that’s $725 USD (£750) for the rear, and $625 USD (£650) for the entrance. Zipp don’t provide the TyreWiz 2.0 with the HiTOP S as customary. These are bought individually at $120 USD (£130 // 145€) per pair, with an additional $30 USD to be spent on the suitable size valve stem pack.
- Wheels: Zipp 1ZERO HiTOP S
- Rim Inner Width: 30mm rim
- Rim Exterior Width: 37.7mm
- Spoke Depend: 24
- Hubset: ZM 900 Hub
- Driver Choices: XD and Microspline
- Enhance solely
- Claimed Weight: 1,495 grams
The HiTOP S is centered concerning the 6-Bolt ZM 900 SL Hubset that’s barely slower to pick-up than the ZM2 SL of the HiTOP SW wheel. It runs two units of two pawls, offset of their timing, interfacing with a 26-tooth drive ring. That successfully delivers 55 POEs, with pick-up coming no later than each 6.54°. Twenty-four Sapim CX Dash spokes lace the rim to the hub.
Are you able to run the Zipp 1ZERO HiTOP Wheels on an eMTB?
Zipp says, aye. However, solely on light-weight eBikes the place the motor’s most torque doesn’t exceed 55 Nm. Riders nonetheless must conscious that they don’t exceed the system weight restrict for these wheels, which is 286 lbs (130 kg). Talking of limits, the utmost tire strain is 50 PSI (3.45 bar).
