00:00Alright, let's talk scooter upgrades, because if you've been riding a stock 50 cubic centimeters
00:04and dreaming about actually keeping up with traffic, a big bore kit is the single best
00:09bang for your buck mod you can do. I went down the rabbit hole and found the top 5 big
00:14bore
00:14cylinder kits for scooters that people are actually buying, actually reviewing well,
00:18and actually getting real power gains from. No fluff, no hype, just the kits that deliver.
00:24Kicking off at number 5, we've got the scooter 70 cubic centimeters 47mm big bore cylinder kit and
00:31head, and this one's for the TGB crowd, the 101R, 101S, 203, 303R, Acros Tech, Delivery, Laser R50X,
00:40all those 50 cubic centimeters air-cooled two-strokes. It comes complete with the cylinder
00:45head, so you're not hunting down extra parts, and it bumps you from 50 cubic centimeters up to 70
00:50cubic centimeters, which has a massive jump in torque for a little two-stroke. At $87.48 with
00:57almost 5,000 sold and a 4.3 rating, it's the priciest on this list, but if you ride a
01:03TGB,
01:03this is the kit that's proven to fit and run. Worth it for the plug-and-play convenience alone.
01:10Coming in at number 4 is the TWH Modification Big Bore Cylinder Kit for the Honda DIO,
01:15that's the DIO 50, AF-17, AF-18, AF-27, AF-28 crowd. And here's what makes this one special,
01:23it's available in 44mm, 48mm, 50mm, and 54mm, so you can pick exactly how wild you want to go
01:31instead of being locked into one size. The DIO platform is legendary for tuning,
01:36and TWH has been the go-to name for these builds forever.
01:41Price? Just $37, with over 4,700 sold and a solid 4.6 rating.
01:47If you've got a DIO, this is the smart money pick, cheap, flexible, and backed by a brand
01:52tuners actually trust. Number 3 is the 47mm 70cm Big Bore Cylinder Kit for Vespa, the 50S,
02:01LX, LXV, Primavera, College, Sprint, all those air-cooled two-stroke 50 cubic centimeters engines.
02:08And honestly, the rating tells the story here, 4.8 stars across more than 4,600 sales.
02:15That's outstanding for any scooter part, let alone a top-end kit.
02:19It takes you to 70 cubic centimeters, keeps everything bolt-on friendly, and it's priced
02:24at $64.55. If you're riding a Vespa and want that classic scooter to actually pull hills and
02:31hold speed, this is the kit people keep coming back to. The reliability feedback on this one is
02:37genuinely impressive. At number 2, the 61mm Big Bore GY6 Kit that takes your 150 cubic centimeters up
02:45to 200 cubic centimeters for the 157 QMJ and 152 QMI four-stroke engines, and it fits scooters,
02:52carts, and ATVs too. This is the biggest displacement jump on the entire list, and get this, it's only $30
02:59.83.
03:01Over 4,500 sold, and a perfect 5-star rating. A perfect rating at that price is almost unheard of.
03:09If you've got a GY6 150 and you want 200 cubic centimeters power without swapping the whole
03:15engine, this is the no-brainer upgrade. Honestly, at $30, it's kind of a steal.
03:21And finally, number 1, the Glyxel GY6 105 cubic centimeters kit with a 52mm bore, built for the
03:28139 QMB and 139 QMA four-stroke engines you'll find in Johnwei, ZNEN, Rokita, and basically every
03:35Chinese 50 cubic centimeters scooter out there. This takes you from 50 cubic centimeters to 105 cubic
03:42centimeters, more than double the displacement, and it comes with the piston kit included.
03:47Price is $39.84, with over 3,500 sold and a 4.9 rating.
03:53If you own one of these ubiquitous Chinese scooters, this is the single most popular upgrade path,
03:59and Glyxel's reputation for quality on this platform is why it tops the list.
04:03So there you go 5 big bore kits, 5 different scooters, and 1 very real power upgrade waiting
04:09for you. All the links are in the description below, so check the one that matches your ride.
04:15If this helped you out, hit that like button, and subscribe for more scooter builds and upgrade
04:19guides. Ride safe, and I'll see you in the next one.
