There are plenty of options available while buying xs1100 big bore kits in the market right now, and if you're confused regarding which one to go for, You have landed on the right page.

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Our Top Picks:

Best Overall: Buy: Rutu Xs1100 Big Bore Kit READ REVIEW

Best For Great Price: Buy: Bbr Motorsports Xs1100 Big Bore Kit READ REVIEW

Best With Thread Lock: Buy: Top Notch Parts Xs1100 Big Bore Kit READ REVIEW

Best For Exhaust Studs: Buy: Aniro Moto Xs1100 Big Bore Kit READ REVIEW

Best For Great Quality: Buy: Weiyingsi Xs1100 Big Bore Kit READ REVIEW

Best For Inner Diameter: Buy: Cspart Xs1100 Big Bore Kit READ REVIEW

Best For Cylinder Head: Buy: 50 Caliber Racing Xs1100 Big Bore Kit READ REVIEW

Best For Big Bore Cylinder: Buy: Niche Xs1100 Big Bore Kit READ REVIEW

Best With Part Number: Buy: Waverspeed Xs1100 Big Bore Kit READ REVIEW

Best For Direct Replacement: Buy: Gpa Motors Xs1100 Big Bore Kit READ REVIEW

Best Overall: Rutu Xs1100 Big Bore Kit

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Compared with other kit in this category, the Rutu Xs1100 Big Bore Kit has a design with broader appeal. The rutu xs1100 big bore kit is used for air filter, is built for high performance and it is designed for easy installation. Make sure this fits by entering your model number. Also, the kit is made with an intake manifold and it works great.

Most importantly, the rutu xs1100 big bore kit is easy to install and it comes with a wrist pin.

Almost all buyers agree that the kit is a 139qmb engine code, Look for the code below the crankcase cover with the kickstart lever. In addition, they say that the kit comes in 64mm n 69mm for 50cc, digital caliper is also available on amazon. Moreover, they say that the kit fits any 49cc w/gy6 style engine. Without any doubt, this product passed the test and had very satisfied buyers eager to share their experience.

• This will work for your bike.
• This includes everything but jets.
• We have 2 versions, 64mm and 69mm valve length version.s Please confirm before ordering.
• This comes with an oil pump and it allows for easy installing.

Best For Great Price: Bbr Motorsports Xs1100 Big Bore Kit

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For a low asking price, Bbr Motorsports Xs1100 Big Bore Kit has managed to overwhelm their customers by packing as many features as they could. The bbr motorsports xs1100 big bore kit is made for air filtering and it is ready to ship. Bbr aluminum cylinder, piston, rings, piston pin, clips, performance camshaft, heavy-duty valve springs, rockers with tappet adjusters and gasket kit. And, the kit is designed for a great price, is great with basic mechanics and it is designed for easy install.

The kit fits the following applications. Lastly, the bbr motorsports xs1100 big bore kit provides you with great instructions and it is used for torque specs.

Most buyers quickly discovered that the kit would only work on the xr100 and crf100 bikes. In addition, they also found that the kit is an easy upgrade and can be done in a day if all goes well. In addition, they strongly agree that the kit has awesome customer service and also it is obviously not going to work for you. With no doubts, this product passed the test and had very satisfied buyers eager to share their experience.

• This is fitment and it comes with a base gasket.
• This is the kit to get for easy bolt on power.
• These make no mention of setting the ring end gap for the kit.

Best With Thread Lock: Top Notch Parts Xs1100 Big Bore Kit

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The Top Notch Parts Xs1100 Big Bore Kit's superior materials make sure that it ages well with use. The top notch parts xs1100 big bore kit looks good and it comes with a gasket maker. Make sure this fits by entering your model number. Moreover, it is made for oil filtering and it comes with a base gasket.

The kit works for head gasket and it is great for head cover gasket. Most importantly, the top notch parts xs1100 big bore kit is used for fuel filter and it fits with a thread lock.

Almost all customers agree that the kit is perfect and fast delivered. Further, they also found that the kit is cheaper than anywhere else.

• This is easy to rebuild and parts are available everywhere.
• Parts fit: 1999 - 2008 honda trx 400ex.
• Replaces oem number 12100-kcy-670 12191-kcy-672 13011-kcy-670 13101-kcy-670 90601-ka5-000 13111-kcy-670 12251-hn1-003 12391-kcy-671 14560-kcw-851.

Best For Exhaust Studs: Aniro Moto Xs1100 Big Bore Kit

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The Aniro Moto Xs1100 Big Bore Kit gives the top-tier kit a run for their money by offering flagship specs at a much more affordable price. The aniro moto xs1100 big bore kit is a 76mm bolt pattern cylinder & head, will not fit the 80mm bolt pattern. This is the perfect kit for a rebuild or you can upgrade your 125cc to 150cc. And, the kit comes complete with valves already assembled.

The kit is great for exhaust studs, looks great and it can ask for good quality. Above all, the aniro moto xs1100 big borekit is sturdy and it allows for easy install.

One customer says - "It would be nice if there were instructions, but you can easily find a video on youtube. ". Almost all customers quickly discovered that the kit is a gy6 or Chinese clone of a gy6 150cc engine, Then yes it will work.

• Fits the 157qmj engines, 76mm bolt pattern 2 1/2" tall head.
• This comes with a wrist pin and it fires right up.
• Delivers what they promise.

Best For Great Quality: Weiyingsi Xs1100 Big Bore Kit

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Best part: Weiyingsi Xs1100 Big Bore Kit costs comparatively little and it is available to ship in 24 hours. The weiyingsi xs1100big bore kit is used for the intake manifold, is fitment and it comes with an oil pump. Manufacturer says: We have 2 versions, 64mm and 69mm valve length version.s. Moreover, the kit comes with a wrist pin and it is perfect for great quality.

Most importantly, the weiyingsi xs1100 bigbore kit is easy to install and it worked perfectly.

Most buyers quickly discovered that the kit was made for Chinese scooters. Further, a few strongly agree that the kit fits on most any 50cc scooter. In short, buyers found this to be one of the best kits for daily purposes.

• This comes with racing ac cdi, ignition coil and racing spark plug included.
• This fits like a glove and also fits icebear well.
• This is designed for easy installation and it works well for good quality.
• It has a 139qmb engine.

Best For Inner Diameter: Cspart Xs1100 Big Bore Kit

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Best part: Cspart Xs1100 Big Bore Kit costs comparatively little and it is available to ship in 24 hours. In addition, it fits perfectly with outer diameter, is suitable for inner diameter and it is great for middle height. Make sure this fits by entering your model number. Most importantly, the cspart xs1100 big bore kit is used for height of doom and it is very nice.

"Nice kit but will not make 125cc’s out of a 110. " - says, one customer. Therefore, most customers find the kit is functionally comfortable and no one questions it.

• Cylinder - middle height:69.5mm, total height:93.2mm, inner diameter:54mm, outer skirt diameter:58mm.
• Piston kit - total height:39.5mm, compress height:19.2mm, doom deep:2.5mm, pin:13mm.
• Delivers what they promise.

Best For Cylinder Head: 50 Caliber Racing Xs1100 Big Bore Kit

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Compared with other kit in this category, the 50 Caliber Racing Xs1100 Big Bore Kit has a convenient design. The 50 caliber racing xs1100 big bore kit can be installed by anyone with basic mechanical skills that is not afraid to turn some nuts and bolts. Requires cleaning and reuse of the stock head. Moreover, it is great to breathe new life into your bike with our high - quality, affordable and reliable big bore kit.

Most importantly, the 50 caliber racing xs1100big borekit is easy to install and it has increased displacement to 60cc.

To sum up, many customers have used the 50 caliber racing xs1100 big bore kit for more than a few months without any issues, and it shows no sign of giving up.

• Increase displacement to 60cc - uses existing cylinder head.
• For yamaha pw50 pee wee 50 pit bikes.
• Compete 60cc bigbore top end kit.
• Piston, rings, pin, circlips, bearing, gaskets, studs, nuts, spark plug.

Best For Big Bore Cylinder: Niche Xs1100 Big Bore Kit

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For a low asking price, Niche Xs1100 Big Bore Kit has managed to overwhelm their customers by packing as many features as they could. Moreover, it works for the head gasket and it is great for the exhaust gasket. Make sure this fits by entering your model number. Lastly, the niche xs1100 big bore kit includes a 94mm big bore cylinder (434cc), piston, piston rings, wristpin and circlips.

To sum up, at the price, they believe that they got a steal of a deal with it.

• Nikasil plated cylinder bore and stroke 94.00mm x 62.60mm.
• It includes a head gasket, base gasket, exhaust gasket and coolant gasket.
• One of the newcomers and featured product.

Best With Part Number: Waverspeed Xs1100 Big Bore Kit

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Waverspeed offers a variety of kit for personal choice and yet maintains quality in all the variants. The Waverspeed Xs1100 Big Bore Kit is used for the head gasket, It is easy to use and has an excellent design. Make sure this fits by entering your model number. And, this is pre-honed and ready to drop in, no modifications required * high-compression hardened aluminum piston kit.

Above all, the waverspeed xs1100 big bore kit is great for o-ring and it comes with a base gasket.

"Considering it ’s about 400 dollars cheaper than the name brand. " - says, one customer. Obviously, this product passed the test and had very satisfied buyers eager to share their experience.

• Complete 434cc big bore cylinder piston and gasket kit.
• [Part number] - 11191-13e00, 1241-29f00, 12140-29f00, 11210-29f20-0f0, 12111-29f00-0f0, 09160-10082, 11141-29f01, 12151-24f10, 09381-20004.
• [Package contents] - cylinder block,piston,piston pin,piston rings,o-ring,head gasket,base gasket,circlips,washers.

Best For Direct Replacement: Gpa Motors Xs1100 Big Bore Kit

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Gpa Motors line of kit comes in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. Also, this includes a piston kit, gasket kit, cylinder. The manufacturer says: We know the commitment and knowledge that is required to meet the needs of the market in America, so we have trained staff to provide the best service at the international level. Most importantly, the Gpa Motors Xs1100 Big Bore Kit is tested to exceed original equipment standards and performance.

Most buyers agree that the kit fits Honda trx400 and fits to 1999, 400ex. And, they strongly agree that the kit will fit the 2002 trx400ex. In conclusion, most buyers agree that the kit is functionally comfortable and no one questions it.

• Std bore 85mm / displacement 397cc.
• This will absolutely not fit and you can’t make it fit.
• The products are direct replacement parts for hassle-free installation.
• Fits: honda sportrax trx400 ex (1999-2008).