Cylinder Works Big Bore Cylinder Kit

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Cylinder Works Big Bore Cylinder Kit
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Cylinder Works Big Bore Cylinder Kit

Our Price: $319.99$944.82

MSRP: $491.85 - $1049.80 - You save up to $171.86 (35% off)

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Additional Videos

Cylinder Works Big Bore Cylinder Kit

Cylinder Works

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Details

    Cylinder Works Big Bore Cylinder Kits set the standard when you want to increase the displacement of your motorcycle, UTV, or ATV. With this kit you get top quality parts rolled into one package so you’ll be able to directly fit every component, torque everything down, and get back to riding. The cylinder itself is made from an OEM grade aluminum casting with a nickel silicon carbide cylinder sleeve that comes precisely sized and honed, giving your engine great ring sealing and cylinder wall longevity. The dimensions of the big bore cylinder are sized to fit your stock engine without any machine work or modification. And to make things easier for you, the kit also includes the correctly sized piston, rings, wristpin, and gaskets to fit your new larger displacement bore perfectly.

    If you want to get more from your machine, pick up Cylinder Works’ Big Bore Cylinder Kit to give your ride with a whole new attitude.

    Specs:
  • Nickel Silicon Carbide plated cylinder
  • Bore comes properly sized and honed
  • Easy bolt-on installation
  • No machining or alteration of your engine or cases needed
  • Kit comes complete with cylinder, gaskets, and piston kit
  • Replacement piston kits and gaskets available

Cylinder Works Big Bore Cylinder Kit Reviews

Each review submitted enters you into a
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
 
4.5 / 5.0
40 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
31
4
2
0
3
Value
4.6 / 5
Durability
4.5 / 5
Fitment
4.9 / 5
Performance
4.8 / 5
Recommend it?
Yes (20)
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Cylinder works big bore kit
I bought this for future use.

-m-2012 KTM 350 SX-F--
May 17, 2018
sprague river, OR, US
Age: 45-64
Purchased
1 month ago
Gender:
Male
Weight:
251 - 280 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Best bang for your buck
Night and day difference installed on my drz400sm paired with stage 2 hot cams

-m-2015 SUZUKI DR-Z 400SM--
March 2, 2018
Felton, DE, US
Age: 25-44
Purchased
4 months ago
Gender:
Male
Weight:
131 - 160 lbs.
Height:
5'4 - 5'6
Value
4 / 5
Durability
4 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Worth the money if needed a bit more power
Made my 2014 sxf 350 pull nice. Id give it a 5 but the only reason i didnt is because it really works much better with a jdjetting tuner of something similiar to really make it shine! Nice power at a lower rpm and "lofts" the front wheel easier now. Nothing negative ro say about thw kit whatsoever! Was going to get a 450 but was cheaper to try this and glad i did! Still not thw torque of a 450 on bottom but pulls great and does not sign off early....just keeps pulling.

-m-2014 KTM 350 SX-F--
User submitted image
Added Nov 21, 2017
November 21, 2017
Gentry, AR, US
Age: 25-44
Purchased
11 months ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
6'1 - 6'3
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
oh yeah
Needed a top end so spent the extra dough for this BBK. the 270 was recommended by a top local KTM mechanic for reliability reasons. Wow the mere 20CC improvement over the stock 250 was worth every penny. Basically kept me from selling the bike. Already had the EFI re-map'd & full fmf system.

buy this BEFORE an exhaust system and thank me later.

-m-2014 KTM 250 XCF-W--
October 11, 2017
Op, KS, US
Purchased
1 year ago
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Cylinder Works 269cc BB
Let me start off by saying wow. This kit brought my bike alive. It has been 11 months since I installed this kit on my bike. I have been to 17 races since installed and I run two classes, 250B and 25+. I have had zero issues, just ordered the parts to freshen it up after the next race and hopefully make it another year. By the way I bought this bike new and it let go 3 months in which is why I bought the big bore. Def reccomend.

-m-2016 YAMAHA YZ250F--
September 26, 2017
Rogersville, TN, US
Age: 25-44
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'7 - 5'9
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Cylinder Works Big Bore
I am 215lbs. Made my RMZ rip! Added the stage 2 cams and exhaust but so simple and makes the bike so much fun to ride. It pulls harder on top than before with the cams and pipe along with the added bottom and mid. Total package. Worth it. Makes more power and is reliable.
September 1, 2017
Fullerton, CA, US
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Excellent bang for the buck
I have used several of these kits on various brands and models and they are worth every penny.
July 6, 2017
Fillmore, UT, US
Purchased
1 year ago
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
No hassle, perfect fit, best out there
Perfect for the quick upgrade, everything you need for the perfect price..

-m-YAMAHA YZ250F--
June 15, 2017
Wendle, CA, US
Age: 25-44
Purchased
1 year ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'7 - 5'9
Value
4 / 5
Durability
4 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Great product
I have about 10 hours on my 270 kit so far, what an improvement!! low end power was a huge increase!! really makes the 250 xcfw come to life! without many hours i am unsure at this point of longevity. But so far i would highly recommend this! All the parts were correct, the kit was perfect. no hassles..
June 7, 2017
Montgomery City, MO, US
Age: 25-44
Purchased
1 year ago
Gender:
Male
Value
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Great kit.
I purchased the kit on sale, and I couldn't have been happier.
Perfect fit, high quality, complete.
Bike ran very strong after as well. Made 38+hp on the dyno and 22lbft of torque (with FMF exhaust + PowerCommander)

-m-2012 KTM 250 SX-F--
May 25, 2017
Marysville, WA, US
Age: 45-64
Purchased
1 year ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'7 - 5'9
Each question or answer submitted enters you into a:
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 18 questions Browse 18 questions and 39 answers
I have a 2013 polaris razor 4 800 I need more power I love the width of my machine i do not want a 900 or 1000 what are the best options?
A shopper on Oct 1, 2016
BEST ANSWER: Big bore kits have worked very well for me. My experience has been with KTM 350 and RMZ 250. The added performance was concentrated mainly in the lower rpm and midrange rpm. Made getting into the meat of the power much easier. Plus if you are mechanically inclined it's easy to install and comes with everything you need. Far better results than buying an exhaust system and more reliable than going for a high compression piston. No issues with reliability. Have friends that have added big bore kits to their utv's and the results were the same. Go for the big bore kit.
My bike is fuel injected. Would I need to adjust the fuel controller on a dyno after this kit?
Jerry M on Nov 22, 2016
BEST ANSWER: Yeah, you'll most likely need to adjust your EFI to compensate for the extra fuel needed with this kit.
What piston does it come with?
A shopper on Feb 13, 2018
BEST ANSWER: My 365 kit for a '12 KTM 350 SXF came with a Vertex piston (standard compression). Everything went together perfectly and added more bottom-end torque and power. I definitely recommend the kit!
Do you need to put different jets in the carb after install of a 434 big bore kit on a Suzuki Z400 ATV?
A shopper on Jan 31, 2017
BEST ANSWER: Typically the answer to that question is no. However the fact is you are changinga very important part of the motor. Not only are you bolting on power, but you are also changing the motors internal volumetric preasure. In order to make the very best of your new cylinder and piston combination, it is important to start w a clean air filter, new spark plug and start by reading spark plug and burn patterns. You want a nice caramel color on the electrode to insure you are having a nice and complete burn. Also make sure you have properly adjusted your valves.
Does this kit work with the stock head?
bobby s on Nov 29, 2016
BEST ANSWER: Yes, it works with the stock head. I just installed it 2 weeks ago. The installation was very straight-forward considering that I've never completed a top-end rebuild. However, the supplied gaskets are slightly different material than the stockers. It has given my 2012 350 sxf a noticeable low-end boost and I haven't had to make any mapping changes so far.
Do you have to revalve after doing a install of a 270 big bore kit?
A shopper on Jan 17, 2017
BEST ANSWER: No you do not, but it wouldn't be a good idea to put valve seals in and to set the valves and reset them again after its broke in !
i have a 2012 kx 250 f fuel injected, after intall this kit , what do i have to do with the fuel injector sistem?
Marcelo s on Mar 7, 2017
BEST ANSWER: You will likely have to refer to a Kawasaki manufacturer for verification. However, I was fortunate with my 2012 350 sxf and didn't have to do anything with the fuel injection. The bike ran great from the time I installed it.
I also have a 2013 razor 4 800 will I need to pull the motor or can i install this in place? any idea how much power over stock this will give? Will I need the fuel programmer for more fuel/air flow?
Thanks, Tim
A shopper on Jan 20, 2018
BEST ANSWER: You can do it right in the frame.. no you don’t need s programmer
Are the ring end gaps set on the big bore kit ?
Thomas W on Nov 20, 2017
BEST ANSWER: I am not sure had someone else install the kit. It has been three years and it is still running strong.
Will this kit work with Hot cams stage one intake and exhaust cams on a 2015 yz250f?
joseph p on Sep 22, 2017
Cylinder Works Big Bore Cylinder Kit
Cylinder Works Big Bore Cylinder Kit
Hot Cams Camshaft (Stage 1)
Hot Cams Camshaft (Stage 1)
BEST ANSWER: Yes, but you will have to re-map it
I own a 2015 KTM 350 xcf-w six days will the kit for the 350 xcf fit my motor?
GAVIN D on Jan 21, 2017
BEST ANSWER: No, it will not work with the 350 XCF-W.
Do i jave to run tace fuel woth this big bore kit?
Sasha A on Dec 13, 2016
BEST ANSWER: No you do not have to run race fuel with this kit.
can i get this kit with a high compression piston?
ERIC A on Dec 8, 2016
BEST ANSWER: Unfortunately where this is a kit we cannot switch out parts from it.
hi i have a 04 kx250f if i buy the big bore kit do i have to get a after market rod? or will any stander rod work?
richard g on Nov 14, 2016
BEST ANSWER: You can run the stock crankshaft and connecting rod.
What is the ratio to this big bore kit?
Gerald L on Nov 10, 2016
BEST ANSWER: This is a standard compression kit so it will match your stock piston compression. What machine do you have?
I'm looking for something for my 2012 750 in your kit. Do you have something for me ?
Lawrence D on Sep 19, 2016
BEST ANSWER: To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application.
will this bottom end kit work with big bore kit?
A shopper on Aug 29, 2016
Cylinder Works Big Bore Cylinder Kit
Cylinder Works Big Bore Cylinder Kit
Hot Rods Bottom End Kit
Hot Rods Bottom End Kit
BEST ANSWER: Yes, it will work with a big bore kit.
Do you have a choice of compression ratios for the big bore kit ?
Thomas W on Nov 20, 2017
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