When I started riding back in the early 1990s, there was basically just one flavor of mountain biking but today MTB categories can get a little confusing. I found this helpful chart over on the Turner website and I think it does a good job illustrating some of the divisions you’ll find in mountain biking find today. The arrows and text below the chart were added for the purposes of this post.

Right off the bat you can see the spectrum of riding from XC to Downhill and everything in between. Notice how the plot gets higher and more jagged as you move to the right, representing technical difficulty (not necessarily climbing or aerobic difficulty). It’s also cool to think of this as a progression chart - beginners can move from XC to AM and beyond as skills improve.

I really like how this chart can be used to show ranges rather than discreet points along the spectrum. In this particular chart, the shaded green area represents recommend usage for the Turner 5.Spot. Notice how it isn’t just a Trail or All Mountain bike. Based on the geometry and travel (5.5″ rear) this bike works well for XC, Trail, and AM riding.

The spectrum approach is also helpful for classifying riders. Most of us enjoy a variety of terrain and saying someone is strictly a Freerider or Downhiller usually doesn’t tell the whole story.

But wait, this chart has one more trick up its sleeve! Most mountain bike trails themselves can’t be readily classified into one type or another. A mellow XC trail may have 5 foot drops in places or even a freeride area that’s 5 miles into the trail. Other trails may have short bursts of All-Mountain style terrain with XC-type fireroads connecting sections. In fact I imagine some trails could cover the entire spectrum from XC to Downhill while others fit more neatly into a single category.

Some generalities about mountain bikes can be made from this chart and I’ve added arrows describing just a few trends you can expect to see when purchasing a new mountain bike. As you move from left to right, travel (front and rear) should increase while weight will follow roughly the same trend. Price, on the other hand, isn’t so easy to classify. For example, remember this $7,000 XC hardtail from Interbike? Finding a DH bike that costs half that amount wouldn’t be too hard (nor would finding a DH bike costing 50% more).

Now, if it were possible to create a mountain bike that could cover the entire chart from XC to DH that would be the holy grail. Maybe the Cannondale Simon will deliver on that dream one day

XC riders looking for a versatile tire for the fall riding season, listen up! I recently tested two of the five sets of XC tires from Intense Tire Systems (ITS) in a variety of conditions and I’m finally ready to share the results. I chose the System 4 and System 5 tires for my tests but you’ll want to choose the System series that’s best for your local terrain and trail conditions.

System 4 and System 5 tires are great for those will experience a wide range of weather and also for those of us who pack a few extra pounds. Both tires are 26 x 2.25″ and have the same single-ply casing with long lasting and grippy C3 rubber compound. These tires are true 2.25-inch wide tires which means they are higher volume compared to other brands (meaning fewer pinch flats for heavier riders). Both the System 4 and 5 tires can be had for about $45 a piece.

The System 4 (left) is an all-conditions tire designed to do equally as well on soft surface as well as hard pack. The ramped and chevron tread patterns work together to keep your wheel where you want it to be. The System 5 (right) is designed for softer terrain with its mud-shedding, wide-spaced tread pattern.

I found that both sets of Intense tires mounted easily and seated nicely in the rim with a satisfying pop. As always I recommend adding a bit of talcum powder to the inside of the tire before placing the tube to reduce friction within the tire and to increase performance. After inflating both sets to 40psi, I was pumped and ready to go! (get it? )

First up: the System 4 tires. I decided to try these guys just after a good rainfall at a local trail that has a great mix of terrain, small climbs, and a few low spots. That day the trail had it all: freshly dried hardpack, wet spots, and even a little mud. On hardpack the System 4 did well and I couldn’t help but compare the performance to the Kenda Small Block 8s. System 4 offers great control on hardpack and rolls smoothly with little energy needed to get them moving. Leaning into corners there was very little squirm and they tracked well, allowing me to change lines at will without fear of loosing traction.

The large volume of this tire really opens up terrain possibilities beyond smooth hardpack. Riding over rough obstacles like rocks and logs felt quite comfortable, especially compared to other 2.00-range XC tires I’ve used in the past. With a smaller-width XC tire I would normally run the risk of pinching a flat, but with these I am glad to say did not have a problem. For that reason, this is a good tire to consider if you find yourself pushing the clydesdale line.

In very loose, wet terrain the System 4s did manage to clog a bit but luckily I had another set of tires in my quiver: the System 5s!

Changing over to the System 5 tires and hitting the same trails on the same day really gave me a good perspective on the differences between these two sets. The System 5 tire ran with a bit more vibration, but didn’t show it when the terrain turned soft. Just like the System 4, the System 5 ran with decent efficiency and didn’t suck up too much energy to get things rolling. The System 5 tread felt stable - not overly soft - and did great job at preventing wheel spin during climbs. However, when the terrain got extra muddy, the System 5s still clogged a little and slipped at times. On the descents these tires offered a ton of control and showed great stopping power.

With the aggressive tread pattern you might think these tires would squirm in corners but I always felt comfortable leaning into the soft stuff. Now on dry, hard surfaces you might not want to lean into these as much; instead, keep the bike more perpendicular to the ground for better traction. Like the System 4 tires, the added air volume was great for trudging through gnarlier trails that might normally serve up pinched tubes.

The System 5 is another great tire, especially for this time of year when the trails are a bit on the softer side and logs and rocks can be slippery and wet. Of course if the trails are really wet it’s usually best to stay off them - lets conserve the trails for everyone!

My overall impressions: System 4

8 out of 10 for climbing
8 out of 10 for rolling and efficiency
7 out of 10 for loose conditions
8 out of 10 for hardpack
8 out of 10 cornering

System 4 Specs from ITS:

Usage: Cross Country
Conditions: Soft - Intermediate - Hardpack
Size: 2.25
Compound LSG C3compound
Weight: 650 grams

My overall impressions: System 5

7 out of 10 for climbing
7  out of 10 for rolling and efficiency
9 out of 10 for loose conditions
7 out of 10 for hardpack
8 out of 10 for cornering

System 5 Specs from ITS:

Usage: Cross Country
Conditions: Soft - Intermediate
Size: 2.25
Compound LSG C3compound
Weight: 550 grams

These are certainly two good tires from ITS - choose the best ones for your terrain and riding conditions!

Cheers.

SUN-Ringlé has be around for a long time now but these days they’re delivering some especially sweet products. Recently the good folks down at SUN-Ringlé sent me perhaps one of their best kept secrets (pssstt - listen up weight weenies). At just 1421 grams for the set (including quick release skewers), the Black Flag Ceramic Diskis a super lightweight MTB wheel set, especially compared to similar Mavic and Easton sets that weigh 1550+ grams.

Looking at these wheels I got all goose-bumpy - well not literally but I don’t know how else to describe the feeling of unboxing such an artfully crafted wheel set. The build quality of the Black Flag wheels is incredible - the spoke line was dead straight (which contributes to a longer lasting wheel build) and all the spokes were tensioned precisely. Overall the Black Flag wheels have relatively high tension at the spokes (though not as high as others like the Easton XC-Ones) which sets the overall feel and performance characteristics of the wheels. Spinning the wheel in free air I could really see how smooth the ceramic bearings were and just how true this wheel set was right out of the box. Can you say butter?

Placing a set of XC tires on the Black Flags was bit of a chore, though that probably had something to do with my tire choice. Other than that installation was a snap - just bolted on my rotors (160mm front and 140mm rear) and a cassette and I was off to the trails.

Talk about lightweight! At first I was a little worried that the Blag Flag wheels were really a set of road wheels in disguise because they felt so light. On the XC trails I was floored at how much faster and how many taller gears I could push with these wheels and I found that I was riding the large front ring a whole lot more than on my typical training ride. Putting the power down, these wheels just went - the low rotational mass combined with the ceramic bearings make for a super fast rolling wheel set. For such a light set of wheels I was impressed by the amount of control these babies offered in tight, twisty turns. I found these wheels to be stiff enough to keep them pointed where I wanted without being so stiff that they knocked my teeth loose.

Overall the Sun-Ringle Black Flag Ceramic wheel set is great for its intended purpose - fast XC trail riding. While you won’t want to use these if you plan on hucking around, the Black Flag wheels are the perfect set to use for race day. If you’re on the heavier side of 180lb these wheels may not be a good fit but running a slightly higher volume tire (2.1″ vs. 1.95″) can give you some added protection against heavy hits. The Black Flags Ceramic wheels are certainly an impressive and lightweight XC wheelset - give them a try!

Cheers!

The Sun-Ringlé Black Flag Ceramic wheel set is sold at most great local bike shops for around $840 MSRP (some dealers may sell for less). Fortunately these wheels are not über-expensive, especially compared to wheel sets with MSRP’s over $1100 for essentially the same thing.

Specifications from Sun-Ringle:

• For XC race conditions
• Black anodized, welded Equalizer 21 rims – disc brake only
• Black anodized Dirty Flea hub set with sealed ceramic bearings
• Hole Count: Front 28 and rear 28
• Wheelsmith high performance spokes – black finish
• Wheelsmith alloy nipples – black ano
• New SUN-Ringle alloy QR with hollow chromoly axles
• 26″ – 559mm
• Weight: 1421g