Grom versus Monkey (price difference)

Old Guy Too Many Bikes

Old Guy Too Many Bikes

Well-Known Member
Did you do a rear fender eliminator kit. My son got one for his, but mine's still stock. I haven't noticed any unusual noises, though. I think the bike accelerates a bit stronger with the Grom tires, especially cranking it on in 2nd or 3rd. It pulls my neighbor's Super Cub quite noticeably. Still ain't no YX140.
 
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Deoodles

Well-Known Member
No fender eliminator. I like the stock setup. My tuned Grom can keep up with my 140. I don’t want more speed from my tune the bike is fast enough. The goal is to add HP/Torque in the 5-8k range. Just enough to be able to hold 55 mph on the roads.
I have the Grom gears and tires on the Monkey and decided to risk mailing the ecu. It wasn’t smooth but I did get it back today tuned. It went USPS Priority and was in Florida in 2 days. That should have been it but it took a turn through Albany NY on its way to Springfield MA. That’s the boneyard for packages the Bermuda triangle of the post office. It spent two days there then back to the same post office in Florida and delivered; two days late I really thought I lost it for a moment.
I reinstalled it and took the bike down the street just to make sure everything was OK. I have to get out and do a longer ride to see if there’s any improvement.
 
Old Guy Too Many Bikes

Old Guy Too Many Bikes

Well-Known Member
Did a 70 mile ride last week on my YX140 CL. speed limits varied from 40 to 55. I could keep up with anyone, and could cruise at 50 effortlessly. Did the same ride today on my Monkey. Generally about 5 mph slower and took a few downshifts at 45 on hills to keep up. But I knew this going in, and it's still a joy to ride.
 
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Deoodles

Well-Known Member
Completely agree my 140 and Grom are about the same. I just got back from a 75 mile ride on the Monkey with the new tune. I can pull 55 in 4th but still lose A little speed on hills. On flat roads 55 isn’t a problem. Top speed didn’t change still 62/63. The Grom tune made a big difference but the Monkey tune only made a difference. My thoughts are the intake tube and the exhaust outlet diameters are smaller and that’s costing the Monkey about 4 mph. Also the riding position on the Monkey causes more wind resistance with the upright position. The bike is pretty comfortable to ride and I’m not interested in a loud intake or exhaust so I have to come to terms with the fact that it’s slower than the Grom and get over it. 525 miles now. The Grom is close to 1400. Maybe more miles will loosen it up
 
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Deoodles

Well-Known Member
Last post here. I noticed anything I tried to gain speed wasn’t really working. The tires and gearing made it a better street version but no gains. The retune didn’t help either it just gave me the ability to rev higher but performance didn’t improve. It really is restricted by the intake and exhaust And those had to remain stock for me. Yesterday I listed it for sale. Can’t believe I got my price and a deposit in a couple hours and today it’s in a new garage.
 
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Old Guy Too Many Bikes

Old Guy Too Many Bikes

Well-Known Member
Well, it is what it is. You had some fun, got your money back, and still got enough little bikes left over to keep you busy. My Monk's a keeper for me even if it'll never hit 60. It is the other hand, very easy to ride slowly, which makes it a perfect companion with my wife on her Metropolitan.
 
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