Tag: CSC RX4

CSC’s 2021 RX4 Colors

The new CSC RX4 is here, and they are moving out quickly from the CSC plant in Azusa, California.  CSC Motorcycles is offering two colors on the new RX4, as shown in the photo above Steve Seidner recently sent to me.  One is a vibrant yellow and the other is a deep, rich blue.  I like them.  If I had to pick one, I’d go with the yellow.  Yellow just seems to work on ADV bike.  There are a number of changes incorporated on the new RX4 motorcycles, as outlined in the CSC mailer below.  The big ones are the spoked tubeless wheels, the new TFT dash, and a tire pressure monitoring system.

We tested the RX4 extensively when it first came to America and published a comparison between it, the CSC RX3, and the Kawasasaki KLR 650.  You can see those reports here.  I may well have been the first American to ever ride an RX4 when I was in China visiting the Zongshen factory not that long ago.   I rode the prototype (literally a 450cc engine in an RX3), and on a subsequent visit, one of the early preproduction models.

Tooling around the Zongshen test track on a preproduction RX4…those were fun times.

I love traveling to China, and I particularly like visiting the Zongshen plant and Chongqing.  It’s a city most folks haven’t heard of here in the US, even though at 34 million inhabitants it is one of the largest cities on the planet.  With that, here’s the info from CSC Motorcycles:

Get More Than Ever! CSCMOTORCYCLES.COM

The new 2021 CSC RX4 is the motorcycle ADV riders have been waiting for. Powerful. Economical. Modern.  The RX4 is an all-around versatile motorcycle that is perfect for real-world riding – including highway cruising, adventure touring, or simply commuting to work economically.

The 450cc single-cylinder, 4-valve, overhead cam, counter-balanced engine produces 40.2 horsepower and achieves a top speed over 95 miles per hour. The RX4 is water-cooled and equipped with Delphi fuel injection and electric start. The bike features a six-speed transmission.

The new RX4 includes an adjustable windscreen, comfortable touring seat and foot pegs with removable rubber inserts. The RX4 features an all digital TFT Display Gauges: dash with digital speedometer, tachometer, odometer, trip odometer, fuel gauge, gear indicator, neutral light, temperature gauge, clock, turn signal and high beam indicators, and Bluetooth connectivity for caller ID. Above the dash there are USB and 12-volt charging outlets included as standard equipment.

The new CSC RX4 includes a 300-watt alternator to power accessories with two prewired outlets under the seat.

The RX4 features LED turn signals and brake light plus LED day-time running lights. The headlamps are controlled by an automatic light sensor. The RX4 has a standard 5.3-gallon gas tank with locking cap. With fuel consumption exceeding 60 miles per gallon, the RX4 has an honest range approaching 300 miles.

The CSC RX4 is outfitted with spoked wheels, black anodized aluminum rims and 80/20 tubeless tires.

The RX4 comes standard with molded side cases, mounting racks and a TALL rear top box – which is large enough for a full-face helmet. Or RX4 owners can select the OPTIONAL package of Tourfella aluminum side cases and rear top box, all with custom side pannier and rear mounting racks.

The CSC RX4 is an unmatched value in the adventure motorcycle category. The powerful and economical 450cc motor is paired with a huge list of standard features that cannot be duplicated elsewhere.

CSC RX4 Standard Features:

      • 450cc liquid-cooled engine, 4-valve, overhead cam, with counter-balancer.
      • Long maintenance intervals (5,000-mile valve adjustment) and easy repairs backed by a full Owner’s Manual and online service tutorials.
      • US Delphi EFI system.
      • 6-speed transmission.
      • Stainless steel twin pipe exhaust.
      • 5.3-gallon fuel tank with locking gas cap keyed to ignition.
      • All Digital TFT Display Gauges: dash with digital speedometer, tachometer, odometer, trip odometer, fuel gauge, gear indicator, neutral light, temperature gauge, clock, turn signal and high beam indicators.
      • Adjustable windshield.
      • 12-volt and USB charging outlets on dash.
      • LED turn signals and brake light.
      • Dual-flash hazard lights.
      • 3D Anti-fog headlamp with LED day-time running light. Low light sensor with handlebar switch controls.
      • 300-watt alternator.
      • Automotive-type waterproof connectors under the seat. An optional handlebar-switch for accessory outlets is available.
      • Adjustable inverted front forks with anodized finish. Fork lock keyed to ignition.
      • Adjustable rear shock absorber.
      • Large diameter dual front and single rear disk brakes with ABS.
      • Front 110/80-19 spoked wheel with tubeless dual sport tire, black aluminum rim.
      • Rear 150/70-17 spoked wheel with tubeless dual sport tire, black aluminum rim.
      • Tire Pressure Monitoring System {TPMS}.
      • Front and rear mud guards, with added rear lower mud guard.
      • Steel engine skid plate. An optional full coverage aluminum skid plate upgrade is available.
      • Frame-mounted engine guards.
      • Comes standard with molded luggage. An upgraded aluminum luggage package is available.
      • Wide foot pegs with removable rubber inserts.
      • Passenger foot pegs and grab rails.
      • Tapered aluminum handlebars with bar-end weights.
      • Dual rear view mirrors.
      • Ergonomic rider and passenger seat.
      • Available Colors: Fire Yellow or Saphire Blue.
      • The RX4 is covered by a ONE YEAR unlimited mileage warranty.

If you’re a serious international adventure rider, the RX4 is one of the best motorcycles available.  I believe it is one of the six best motorcycles you can take into Baja if you are seeking a great bike at a super price.  You can read more about the new RX4 on the CSC blog.

Subscribe to the ExNotes blog for free!

The New RX4 Video!

As many of you know, good buddy and motojournalist extraordinaire Kevin Duke is now a Brand Manager with CSC Motorcycles, which is good for CSC and good for Kevin.   Kevin and CSC recently released this video on the new 450cc RX4 motorcycle, and it’s the best one to ever come out of CSC (the video and the motorcycle).  But don’t take my word for it…check it out yourself!

If you’d like to see more about how the RX4 compares to the RX3 (and to the KLR 650) please check out our RX4 pages.

RX3 to RX4 Comparisons: Part 3

The RX4 on the road. I wanted to get a shot at the truck scale, but conditions were not conducive to good photography.

The next two blogs (this one and the next) address more differences between the RX3 and the RX4, including the weight, the dash and instrumentation, the rear fender, tire sizes, the radiators, the radiator bottle fill port, the kickstand, the rear brake and gearshift levers, the rear wheel adjust mechanism, the swingarm, and the engine mounts.   This blog will focus on the bike’s weight and the two bikes’ highway performance.  I’ll sweep up the other differences mentioned above in the next blog.

Let’s talk about the 450-lb gorilla in the room first, and that’s the RX4’s weight.  The RX4 is a heavier bike than the RX3, and I guess the question is:  Is this a good thing or a bad thing?  It’s all a question of perspective and intended purpose.

For starters, I still don’t have an accurate, measured weight on either bike.   That’s a shame on me, although I will tell you that I tried.

My plan was to get the RX4 weighed first, and then return with my RX3 to do the same.  I took the RX4 to our local certified truck scale, but the bike was too light to register on the scale and a loudspeaker-borne voice basically told me to get out of Dodge.  It was a scary experience.  There’s a monstrous Petro truck stop on the I-10 freeway about 10 miles from where I live, and I thought it would be a simple matter to roll the RX4 onto the scales and come back with The Number.  That was my plan, anyway.

I entered the super-busy truck stop through an area teaming with idling 18-wheelers, engines barking and belching, crammed together weighting (or is that waiting?) to funnel onto the Petro parking lot scales.  On my RX4, I was acutely aware of three things:  The guys driving these monsters couldn’t see me, the engine noise and fumes were overwhelming, and the RX4’s fat rear end (those Tourfella bags are wider than the bike’s handlebars) made maneuvering through the 18-wheeler maze a dicey proposition.  The pucker factor was elevated, folks.  Big time.

I made it through, though, and I was finally on a scale with a platform as long as, well, an 18-wheeler.  There was this elevated control house sort of thing next to the platform.  It wasn’t clear to me what was supposed to happen next, as I couldn’t see anybody running the operation, and there was no digital or analog readout telling me the weight.  I stopped the bike and dismounted, and I walked toward the elevated control house when an  electronic voice from the Heavens boomed.  It was way louder then the idling diesel engines surrounding me and I could tell:  It was pissed.  At me.

“Can I help you?”  It didn’t come across as a request that implied an intent to be helpful.  It implied anger.  Seething anger.  Directed at me.  As a two-wheeler, I was but one-ninth the vehicle I was supposed to be.

Well, yeah, I want to weigh my bike.  I mean, why else would a normal person be here?

“You’re setting off my alarms.”

Sorry about that, dude.   What alarms?

“You’re too light and my alarms are going off!”

I want to weigh my bike (sometimes repetition helps, I thought).

“You need to get out!”  There it was.  No more implying or inferring.  It was out in the open now.  It was as if I was wearing a MAGA hat on the Harvard campus.  I was not welcome.

Okay, I can take a hint.  Hell, a weight is just a number anyway.

Which brings me to my next point.   What’s in a number?

Whatever the answer is to that question, I can tell you these three things: One, the RX4’s official number from Zongshen is 450 lbs.  As I said before, I don’t know if that is the right number, but I suspect it is not.  Two, the RX4 is substantially heavier than my RX3, and weigh heavier (or should that be way heavier?) than my TT250.  It feels it, and it feels to me like the weight rides higher.  Three, the RX4 is a substantially better road bike than the RX3, and the bike’s added heft and longer wheelbase (along with that marvelous 450cc motor) probably plays a role here.  Anyway, the bottom line here is this:   There’s no Joe Berk official weight yet (read that to mean a weight actually measured on a scale).

Like I said, I can feel the difference in heft between the RX3 and the RX4.  It’s enough to make me wonder:  Am I man enough to take this puppy off road?   I suppose I could be.  I know there are a few guys who actually take GS 1200 BMWs off road, and those things have seat heights and weights that require altimeters and maybe truck scales to measure.   But would I want to go off road?

The short answer, I think, is this:  If your main objective is off-road riding, there are other choices.   I’d go for my TT250 or something else.  If you are primarily a road rider, though, with the occasional off-road excursion, then the RX4 is a good choice.   In my opinion, the RX3 would be better off road, but that’s just what I said it was:  My opinion.  Your mileage may vary, as they say.  I was thinking about the stretch to the Sierra San Francisco cave paintings in Baja, and to me, I’m right at the limits of what I feel comfortable with on that gnarly stretch on my RX3.   It’s heavily rutted, there are big boulders, and it’s a challenge.  But then, I freely admit I’m not a dirt biker.  I know there are guys reading this who are thinking they would have no problem taking the RX4 off road.  If you’re one of them, you’re probably right.

If you are primarily a road rider, though, the RX4 is the better choice.  I put about 100 miles on the RX4 on freeways and surface streets here in So Cal, and I can tell you this:  The RX4 is clearly a more capable road machine than is the RX3, especially at freeway speeds.   I didn’t get a long enough stretch to measure the RX4’s top speed, but I can tell you there were spurts where I cranked it up to an indicated 99 mph and there was still more left.  That’s indicated (not actual) top speed, and the speedo is 10-12% optimistic.  Zongshen claims a top speed of 97.5 mph for the RX4, and that’s probably accurate.  The RX4 is a bike that can cruise comfortably at 80+ mph all day long; the RX3 has essentially run out of steam at that speed. The RX4 makes running with the big dogs seem easy.  It is rock steady at high speeds, and it’s comfortable.  It feels secure.

That magnificent 450cc motor…

In many ways, the RX4 reminded me more of my Triumph Tiger than it reminded me of my RX3.   The Triumph was essentially a touring machine/sports bike styled like an off-roader with saddlebags. The Triumph was heavy and I only took it off road once on purpose (and that was enough).  I rode the Triumph off road a few more times when I had to in Mexico, but it really was not an off-road bike.  I know there are guys who ride the big Tigers off road, but it’s not where the bike wants to be.   It wants to be headed to the next state, or maybe the next international border.  That’s what the RX4 wants, too.

My Triumph Tiger. In many ways, the RX4 is quite similar to the Tiger. It was a stellar long-distance touring machine; I think the RX4 is, too.

I’ll make a prediction:  Within the next two years, someone (perhaps several someones) will do the Iron Butt on the RX4.  I don’t mean a single 1000-mile Baby Butt day (good buddy Rob Morel has already done that on his RX3).  I’m talking the full-tilt boogie here:  The 11,000-mile, 11-day Iron Butt.  I think that’s going to happen.  And I think the RX4 is the bike that will do it.

I was talking to Steve Seidner about this a day or two ago, and he asked me to mention to you that CSC is taking deposits now on the RX4 (here’s a link to get to their page for placing your deposit).  CSC will sell a lot of RX4s.  The bike is that good.

The RX4: First Impressions

A stunning RX4 in the San Gabriel Mountains. The paint is pearlescent metalflake orange, the new fastest color.

I rode my TT 250 to the CSC plant early today and picked up a new RX4. Steve asked me to ride the RX4, make observations, and write about the new bike on the ExhaustNotes and CSC blogs. I’ll be preparing several blogs on the RX4; this is the first of many.

I rode my favorite Azusa Canyon, East Fork Road, Glendora Mountain Road, and Glendora Ridge Road route. It’s one of my favorite rides, it’s just under 50 miles of the best riding on the planet, and I knew it would give me a good chance to wring out the bike’s handling. The RX4’s handling was my biggest concern going into this review, as the RX4 I first rode in China two years ago left a bad taste.  That early bike was porky and it handled poorly.

First significant observation:  The RX4’s handling is phenomenal. It’s really, really good.  I’ll get to that in more detail, but I wanted to mention that first.

Tourfella bags…lots of capacity.

Next, let me tackle the weight issue.   That was another one of my earlier concerns, but not anymore. The RX3 has a published weight of 386 lbs. The RX4 has a published weight of 450 lbs. I never put much stock in any published weight figures, because I know how the manufacturers calculate weight. They do it the same way we did it in the defense industry: Mass properties analysis. Some engineering weenie tucked away in a cubicle looks at the dimensions of every part, calculates each part’s volume, identifies the part’s material and its density, and puts it all together in a spreadsheet to calculate total weight. It’s a scientific guess.  They’re always low compared to reality.

Me? I go by what the bike feels like and how it handles. Sometimes if there’s a scale handy I’ll do something old-fashioned and actually weigh the thing. My KLR 650, for example, had a published weight of something in the low-400-lb range. We had a scale when I worked at Layne, and I rode the KLR onto it one night and saw that my Kawasaki actually tipped the scales at well over 560 lbs. So much for published weights.

So, the RX4 is heavier than the RX3. No, I didn’t have a scale available, so I didn’t weigh it today and I don’t know if that 450 lb number is accurate or not. The weight concerned me big time in China two years ago, and then again when I first sat on the new RX4 last week. Last week, it was mostly because the bike felt heavy when I tipped it off the sidestand.   Last week, the RX4 had the CSC tall seat on it.  And, the RX4 has a 19-inch front wheel (the RX3 has an 18-inch front wheel).  The bigger wheel and the tall seat make the bike taller, and that 19-inch front wheel means the bike leans at a perceptibly steeper angle on the sidestand, so tipping it to vertical (off the sidestand) made for a noticeable increase in effort compared to my RX3. First order of business was to have the boys put the stock seat on the new RX4 (it takes the same seat as the RX3).  That alone made it easier to get off the sidestand.  But yeah, it’s heavier than the RX3.  Is it a problem?   Read on, my friends.

It was on to my ride, where I would soon learn if the RX4’s added weight adversely impacts handling.

Let me get to the good stuff.  I was soon on Highway 39 and in the twisties. The bottom line?  The bike handles phenomenally well. It feels more planted than the RX3 and handled the twisties just fine. Actually, it was great. The bike handles better than the RX3, and the RX3 is a sweet handling ride.

I wanted to stop for photos on 39 (I have a few favorite photo op spots), but truth be told, I was having too much fun riding the thing. The RX4 sounds a lot like the RX3, but the exhaust note (love that phrase) is a bit deeper and a bit louder. Not objectionably so, but it’s noticeable.

I stopped for a few photos on the East Fork Road, and then I was on Glendora Mountain Road.  I had the road to myself and it was a glorious morning.  Cool, crisp, California mountain air.  Life is good.

Glendora Moutain Road is all tight uphill twisties. This stretch climbs sharply and it literally has no straights; it’s curve city all the way to the top. To cut to the chase here, it was on this stretch that I could feel the RX4’s huge improvement over the RX3.  In the lower rev ranges, the RX4 has more grunt than the RX3, but it’s not a dramatic difference. It just has more oomph in the 3500-5000 rpm range.

Then I noticed a couple of things: I was getting through this stretch way faster than I would on my RX3, and I wasn’t rowing up and down through the gears like I would on my RX3. I just left the RX4 in 3rd and throttled up and down as needed. The bike wasn’t in its power band yet (and it’s not broken in yet), but it liked being in 3rd powering up into the San Gabriels. Then I noticed something else: This bike handles. It’s rock solid and it doesn’t seem to have any lean angle limits. Oh, I know it does and at some point something would have to scrape, but let me tell you, I was surprised at how good I must have looked carving my way up there this morning. I kind of wished somebody had been there to YouTube the thing. I was cooking. I’m not normally a guy who cooks, but I sure was cooking this morning.

The run east on Glendora Ridge Road was similarly exciting (I mean that in a good way).  From the time I left Highway 39, all the way up on Glendora Mountain Road, and then all the way to Mt. Baldy Village on Glendora Ridge Road, I had the road to myself. I didn’t see a single other car or motorcycle. That doesn’t happen too often.  Like I said, it was a glorious morning.

Up on Glendora Ridge Road. I was the only guy up there this morning.

A quick check on my GPS shows the RX4 speedo to have the characteristic Zongshen 10-12% optimism built in. The speedo reads faster than you are actually going, just like it does on my RX3.  I don’t know why these guys won’t correct this. I tried.  Hey, it is what it is.

More impressions: The peg to seat distance felt very slightly cramped for me with the stock seat. It wasn’t a big deal. I guess I need to find something negative to say to be like one of the magazine guys, and so far, this and the speedo error are it. I have the tall seat on my RX3 (which is a better deal from a comfort perspective). I may have Steve put the tall seat back on the RX4. There may be an opportunity down the road for CSC to offer a footpeg lowering kit. But it’s not a deal breaker. I guess I’d say the RX4 felt about like my Triumph Tiger used to feel.

A lot of guys want to know about the brakes. They’re a significant step up from the RX3’s stock brakes. The RX4 has dual disks up front. I have the large diameter aftermarket front brake on my RX3, and the RX4 subjectively felt maybe a little bit better than that. On that subject, though, I will tell you that I think the whole issue of the RX3 standard front brake has been overblown.  I made a comment about the magazine guys having to find something to bitch about to prove they are objective and not unduly influenced by advertising dollars. On the RX3 it was the front brake.  I never quite got that, though. I had a Harley Softail and a KLR 650 before I got my RX3, and the stock RX3 front brake was better than either of those bikes.

I like the headlight on the RX4. I have no idea how good it is at night (that will come later); my comment is based on the looks of the thing. The way it works it has a trace light around the headlight (that’s the daytime light). You can either switch the headlight on, or leave the lights on auto and when it gets dark, the lights will come on automatically.  When I first saw this headlight in China, I thought it looked too much like BMW’s GS headlight design, but it’s grown on me.  You can bet some Internet weenie will make a snarky comment about Zongshen copying BMW.  Throw ’em a bone, boys.  They gotta bitch about something.

The RX4 headlight. I don’t yet know how it does at night. I sure like the look!

The bike I’m riding has a pearlescent metalflake orange and silver paint theme. It’s beautiful. I don’t know what colors CSC will specify for their production order, but I hope this one makes it to our shores. It’s way nicer, I think, than the standard RX3 orange.  I know that orange bikes are faster, too.  It’s a win-win.

My RX4 has the optional Tourfella aluminum bags and top case. I rode with these through the Andes in Colombia (I like being able to say that).  The Tourfella luggage capacity is amazing. They are huge, though, and I know on an RX3 I can feel the difference in handling between the stock bags and the Tourfella bags (on an RX3, the stock bags are faster). I didn’t have an RX4 with stock bags to make a similar comparison. It’s a tough question; I don’t what I would do on a new RX4.  I do like those big aluminum boxes, though.

So, my first impression is that the RX4 is an awesome motorcycle. The handling is great. It just seems to find its way through the corners and the added power makes the bike feel more planted and more stable, if that makes sense to you. I would say it’s the bike’s strongest point.

Steve told me the RX4 is going to sell for $5,895. That’s $2,000 more than an RX3. Is it worth it? In my opinion, yes (assuming you’ve got the shekels). But I will also say this: The RX3 is one hell of a motorcycle, and I like the idea of a 250 for serious adventure touring in less developed countries.  We’re a freeway country.  In other parts of the world, freeways are rare or non-existent.  Don’t get me wrong; I’ve done a lot of freeway miles on my RX3 and it’s quite capable in that environment.  But the RX4 would probably be better on the freeway.  I say that having ridden no freeways on the RX4.  Yet.  All in good time.

There’s a lot more coming on this bike, folks. I’m just getting started. Top end, high speed long distance touring, fuel economy, freeway handling, and more…I’ll get into all of that. I’ve got a lot going on back at the ranch right now, but I may see a quick two-day ride through Baja on this bike. Hey, I gotta probe for weaknesses, or this wouldn’t be a complete report.

One last thing…somebody asked the spoke diameter. Before I forget, Joey measured that for me before my ride this morning. It’s 3.5mm up front, and 4.0mm in the rear.

Need I say it?  Stay tuned…