Gy6 171cc big bore kit top speed

So when ordering a boring tool or any GY6 engine parts like cylinders, rocker arms, cylinder gaskets, make sure it says "fit 54mm" or "fit 57mm." This is covered in more detail in blog share GY6 Swap [Big Bore Kit]. Now, here are some GY6 big bore kit upgrades that will fit well in the GY6 B-Block. GY6 Engine Upgrade / GY6 Big Bore Kits

Scooter GY6 150cc Taida 61mm Big Bore Kit Cast 171cc. ... Scooter GY6 150cc 63mm Piston rings for RM Big Bore Kits (#174765897796) ... Back to home page Return to top.Can we hit a new top speed on the GY6 Ruckus?My Merch - http://Motonosity.com/shopPrevious Vlog - https://youtu.be/v6iJTx4-hm8The Ruckus is fixed, the carb i...Description. This 50cc big bore kit will boost your scooter up to 80cc, and you still won’t need a license to ride it. On paper it’s still a 50cc scooter! On the road, the 50cc big bore kit makes your scooter faster… as fast as a 80cc scooter. This works on ATV, UTV, dirt bikes etc. too. However, there are things other than the 50cc big ...Description: High-Quality Taida Cast-Iron Cylinder 61mm 171cc with Forged Aluminum Piston offers better durability and reduced friction for GY6 125/150cc+ engines. The cylinder bore is 61mm. Taida Cylinder Big Bore Kit Quad Combo 61mm 171cc 2V w/Forged Piston Fit 54mm including the following parts Taida 61mm (171cc) cylinder kit with forged … GY6 171cc / 172cc Scooter Big Bore Kits (FITS QMJ157) From $149.00 Magnetic Drain Plug Kit. Regular price $25.00 GY6 Scooter Spark Plug (pre-gapped) ... After 1 ride on the stock 150cc GY6, it's time to go bigger! We're talking 171cc Big Bore Kit :)PREV VLOG - https://youtu.be/1JPAx6n4Dacvv MORE INFO & SOCIAL...you asked for it so here it is, in this video we show you how to install a 171cc 61mm big bore piston, cylinder, head and new cam. we also show you how to sh...

Then this 88cc big bore kit for you, although its not a bolt on item for most QMB 139 bikes. Most of the time, engine cases must be cut. Order part number 1400-1001, Engine Bore Tool if there is no access to a machine shop. Its also recommended to get part number 1100-1239, 50mm big valve head as well, as some stock heads will not fit.Jan 1, 2024 ... I bought the cheapest 125cc Pit bike from Amazon / overview and Terrifying top speed ... How to install a big bore kit GY6 171cc / 172cc (61mm). The Beast Big Bore Kit. $99.95 $129.95. Add to Cart. Why Would You Want To Ride A Scooter When You Could Be Riding A Beast. The Beast 100cc big bore kit is a top of the line kit for the QMB139 GY6 Engine. Made from high quality cast aluminum. This kit not only doubles the horsepower of your engine. So you can reach speeds of 50+ MPH. If you are looking for performance upgrades for your GY6, Ruckus, Navi, Zuma, Metro or even Maddog scooter this is the spot. We specialize in making small bore GY6 engines faster and GY6 swapping Honda Ruckus scooters. We have plenty of step by step videos to show repairs and parts installs via our YouTube videos.GY6 150 Buggy Engine. BIG BORE KITS. 57.4mm 149ccStock. 58.5mm 155cc. 61mm 170cc. 63mm 180cc. check your engine, the stamp on your cylinder block may include these numbers: QMI152, QMI157, QMJ152, QMJ157. NOTE: the 52 and 57 correspond to the bore size. 52mm for 125cc and 57mm for 150cc.Description: NCY 61mm Cylinder Head Wear-Resisting 2 valves with a larger 27.5 intake / 23.5 exhaust ports will allow your GY6 cylinder to breathe better! Works great with NCY Cylinder 61mm 171cc Big Bore Kit w/Cast Piston.A 10mm diameter head allows for extra clearance between your wrench and the head for easy access. When changing a …

Cylinder kit 180cc (63mm) for GY6 125-150cc 54mm. CAD$ 129.99. Add to cart More. In stock. High Quality 171cc Taida Cylinder kit for GY6 125/150cc + engines. The bore is 61mm. Kit is suitable for all air-cooled 4 stroke 125-150cc Kymco engines (scooters), and most Chinese imported vehicles 125/150cc (scooters, quads and buggies).A handy guide advising what should be included in your sports first aid kit. Effective for both professional and amateur athletes. Try our Symptom Checker Got any other symptoms? T...I go talk about the 80cc Big Bore kit for gy6 scooters and if it is actually worth it and what it is like after installing it. We cover a few things to consi...Whether you're looking to upgrade your go-kart's top speed, acceleration, or overall performance, our performance parts are the way to go. ... 155cc Big Bore Kit - 58 ...GY6 150 Buggy Engine. BIG BORE KITS. 57.4mm 149ccStock. 58.5mm 155cc. 61mm 170cc. 63mm 180cc. check your engine, the stamp on your cylinder block may include these numbers: QMI152, QMI157, QMJ152, QMJ157. NOTE: the 52 and 57 correspond to the bore size. 52mm for 125cc and 57mm for 150cc.

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COMPLETE BUILDER ENGINE KIT:https://www.rollingwrenchdenver.com/products/gy6-171cc-builder-engine-kit-long-case?_pos=1&_sid=d02557169&_ss=rBECOME A MEMBER:ht... 52mm performance big bore cylinder kit by ncy for 50cc or larger qmb139 engines 50cc qmb139 4-stroke 52mm, racing big bore cylinder set. KIT INCLUDES CYLINDER, …Dog House Kits - Dog house kits help make dog house building easier. Learn more about dog house kits at HowStuffWorks. Advertisement You want your dog to have a nice house. Maybe y...For instance, a mild 70cc big bore kit can generate up to 8hp and runs of between 8-9000rpm’s on a 50cc scooter designed for 7000rpms and 4-5hp.On the other hand, you can opt for a high-performance big bore kit which can effortlessly generate more than 20hp at a 20000rpm’s.For effectiveness, it is important to choose the right cylinder for your scooter. We pieced this kit together with the best of the best materials (rings, gaskets, springs, and metals) This 171cc kit (or as some call it 172cc)is a no case boring big bore kit unlike some others on the market. Its the largest big bore kit you can go on the GY6 A motor (Chinese GY6 QMJ157). Our 61mm kit is a drop in kit. Others on the market are ...

you asked for it so here it is, in this video we show you how to install a 171cc 61mm big bore piston, cylinder, head and new cam. we also show you how to sh...The same goes for adding a big bore kit to a GY6. The super hornets and similar bikes are hideously unreliable... even as far as the GY6 platform is concerned. The 150's that come in those bikes are bottom mount GY6 engines and are made by a different factory than all of the standard top mount GY6 engines, and are just junk.Chess boxing, Football tennis, Bossaball: these hybrid sports are anything but boring. Chess boxing is the sport for anyone who’s every wished that you could win a board game by be...Jan 1, 2024 ... I bought the cheapest 125cc Pit bike from Amazon / overview and Terrifying top speed ... How to install a big bore kit GY6 171cc / 172cc (61mm).172cc GY6 drop in crate engine. $2,135.00. Shipping calculated at checkout. Add to Cart. Are you looking for big drop in power? This GY6 171cc or as others call a 172cc Drop in crate engine is the set up! We utilize Jeff Pfeiffer out of Washington (aka #mayor_of_wa_riders) to build all of our drop in ready motors.This 100cc Big Bore Kit really packs a punch from initial take off to the full throttle top end.Buy Parts To Make Your Scooter Faster Here: https://www.nthef...Great torque, faster acceleration with a nice improvement in top speeds, as well. Very quiet kit that breaks-in a bit easier than most. Fits : Yamaha BWS (02-09), Yamaha Vino (2-stroke), Yamaha Jog, CPI Tracker JV50 (up to 2004), ... NCY 171cc Big Bore Kit - for GY6 150 / No case grinding Airsal T6 70cc All Aluminum Cylinder Kit CPI Keeway ...The average meal kit has about 10 pounds of leftover recyclables and trash, Money found. Here are 10 ways to give those items new life. By clicking "TRY IT", I agree to receive new...This setup includes the following: 61mm big valve cylinder head. 61mm 171cc cylinder kit complete with all gaskets/piston etc. High lift race camshaft. If your looking for a quality, simple. and effective big bore/cam/head package for your 150cc gy6, look no further. This setup requires ZERO machine work. Don't forget some ProCure to avoid any ...It's time to add some pep to our step! In this video, Brandon joins the channel again and we install the new ProBld GY6 171cc Big Bore Kit and Kaboodle set u...This set is crafted for top notch performance and with high-end materials. ... RUTU 69mm Valve GY6 Big Bore Kit 100cc,with 6pin Racing CDI Ignition Coil,Compatible with Big Bore Kit for 49cc, 50cc & 139QMB Scooter Engines - 50mm Cylinder Block, 90cc, Boosts HP & Speed 5-10mph.

Apr 3, 2021 ... Go to channel · IT'S LEGAL! + New Top Speed! Motonosity•408K views · 30:16 · Go to channel · How to install a big bore kit GY6 171cc...

Taida GY6 170cc Performance Engine Package - GY6 150cc. $48.99. $1,685.78. Create your own GY6 170cc big bore engine package! Starting with a 61mm cylinder kit will get you to 170cc without any machining or splitting of the engine case! Once you've chosen a forged or cast piston, select the additional add-ons and other options.Cylinder Big Bore Kit. 180.5cc, 63mm. The stock GY6 150 cylinder is 57.4mm. 63mm Big Bore Cylinder Kit for the GY6 125/150 engine. Upgrade your engine to 180cc. Includes: Cylinder, Piston, Rings, Wrist pin, Clips, Gaskets. Description: High-Quality Taida Cast-Iron Cylinder 61mm 171cc with Forged Aluminum Piston offers better durability and reduced friction for GY6 125/150cc + engines. The cylinder bore is 61mm. Taida Cylinder Big Bore Kit Trio Combo 61mm 171cc 2V w/Forged Piston Fit 54mm including the following parts Taida 61mm (171cc) cylinder kit with forged ... Another company founded by Elon Musk tries to do what has never be done using technology that has yet to be tested on a scale that has never been attempted. The city of Chicago has...DROWsports Taida GY6 232cc kit is the biggest baddest motor you can build using a GY6 platform. “Taida 232cc Parts” has all the major components to assemble a complete GY6 232cc motor. We recommend everything in this group as a minimum to convert a stock GY6 150 to big bore 232cc GY6. Taida Watercool 67mm Big Bore Cylinder is also an ...334K views 6 years ago. After 1 ride on the stock 150cc GY6, it's time to go bigger! We're talking 171cc Big Bore Kit :) PREV VLOG - • FIRST RIDE on a 150cc GY6 HONDA RUCKUS!! vv …DIY tool for making a bigger hole in the blocks of engine (125ccm GY6). Without take apart engine and remove of crank shaft.

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Jun 17, 2017 ... Thank you for watching and supporting my channel feel free to use my referral links. If you need help with any of these products call or ...NCY GY6 150 61mm Cylinder Kit 62.9mm outer sleeve diameter. Give your GY6 based scooter some serious power with this bolt on 171.3cc kit for most GY6 125/150cc engines. As far as we know, this is the only 61mm cylinder kit for the GY6 engine that exists in the US. With most 61mm cylinder kits, you have to cut the engine cases in some way to ...Jun 17, 2017 ... Thank you for watching and supporting my channel feel free to use my referral links. If you need help with any of these products call or ...In this article, I will delve deeper into this exciting upgrade and explore its benefits for motorcycle enthusiasts like you and me. So buckle up, because we are about to take a thrilling ride into the world of the Gy6 150Cc Big Bore Kit 200Cc. I Tested The Gy6 150Cc Big Bore Kit 200Cc Myself And Provided Honest Recommendations Below GY6 171cc / 172cc Scooter Big Bore Kits (FITS QMJ157) From $149.00. High Compression (High Altitude) GY6 171cc/172cc Scooter Big Bore Kits (FITS QMJ157) From $149.00. GY6 150cc Engine Big Bore Install Guide; GY6 150cc Engine Maintenance Manual; How to Adjust the Valves on GY6 150cc Motors; 250cc Engine Maintenance ... Click here to download a guide to install a big bore kit on the GY6 150cc motor. Categories. Air / Fuel System; Air / Fuel System Guides; Beginner's Guide — Where to start? Electrical ...Was $155.98 Save 7%. Get it by Thu, May 18 - Sat, May 20 from Denver, North Carolina. • New condition. • 30 day returns - Buyer pays return shipping. NCY GY6 172cc 61mm CYLINDER KIT W/O HEAD. WITH THIS BOLT ON 171.3cc KIT FOR MOST GY6 125/150CC ENGINES. FOR THE GY6 ENGINE THAT EXISTS IN THE US.Get the most out of your big bore kit or even a stock motor, with increased top speed and a more usable rev range. 20mm W x 20mm I.D You will need a transmission gasket which we sell. SKU: GEARSET Categories: Engine Performance , Gy6 150cc Tags: GY6 , GY6 Performance , gy6 transmission , GY6 Variator ….

FULL VIDEO:https://www.rollingwrenchdenver.com/products/how-to-installBUY THIS 171cc KIT:https://www.rollingwrenchdenver.com/products/gy6-171cc-big-bore-kitB... High-Quality Taida Cast-Iron Cylinder 61mm 171cc with Cast Aluminum Piston for GY6 125/150cc + engines. The cylinder bore is 61mm. Taida 61mm Cylinder Big Bore Kit is suitable for all air-cooled 4 strokes; 125-150cc Kymco engines (scooters), and most Chin Nov 30, 2023 ... Power Upgrade Alert Elevate your Yamaha C3, Zuma 50F, Vino 4T scooter from 50cc all the way to 76cc with this performanc Big Bore Kit!180cc *63mm bore* big bore cylinder kit for 150cc gy6 engines (54mm spacing) universal parts. msrp: $79.99 ... universal parts 63mm bore big bore cylinder kit . Taida GY6 170cc Performance Engine Package - GY6 150cc. $48.99. $1,685.78. Create your own GY6 170cc big bore engine package! Starting with a 61mm cylinder kit will get you to 170cc without any machining or splitting of the engine case! Once you've chosen a forged or cast piston, select the additional add-ons and other options. Feb 8, 2021 ... 125cc Top End Rebuild ... Maddog GY6 150 Gets Rear Gear Set and goes 70 MPH! ... GY6 171cc / 172cc BIG BORE BUILDER ENGINE KIT [A++ PERFORMANCE].Do you know how to use a dial bore gauge? Find out how to use a dial bore gauge in this article from HowStuffWorks. Advertisement A dial bore gauge is a special tool, calibrated in...Taida 61mm Forged Piston 2-Valve set 171cc for 4-stroke GY6 Engine. ... Koso Cylinder 61mm 170cc Big Bore Kit w/Forged Piston (Grom, Monkey 125) Koso Cylinder Gaskets 61mm Set Fit 21.5mm (Grom, ... Top-Racing Crankshaft Needle Bearing Reinforced 17x12x13mm (Honda Dio) TRS. Gy6 171cc big bore kit top speed, Description: High-Quality Taida Cast-Iron Cylinder 61mm 171cc with Cast Aluminum Piston for GY6 125/150cc + engines. The cylinder bore is 61mm. Taida 61mm Cylinder Big Bore Kit is suitable for all air-cooled 4-strokes; 125-150cc Kymco engines (scooters), and most Chinese imported vehicles GY6 125/15, gy6 150cc scooter upgraded heads 171cc from rollingwrench, DROWsports Taida GY6 232cc kit is the biggest baddest motor you can build using a GY6 platform. “Taida 232cc Parts” has all the major components to assemble a complete GY6 232cc motor. We recommend everything in this group as a minimum to convert a stock GY6 150 to big bore 232cc GY6. Taida Watercool 67mm Big Bore Cylinder is also an ..., Product Description. GY6STORE 155cc BIG BORE KIT FOR CHINESE SCOOTERS. 58.5mm BORE (NO BORING REQUIRED) TAKE YOUR STOCK 150cc GY6 MOTOR TO THE NEXT LEVEL WITH THIS NO BORING REQUIRED DROP IN KIT. WITH THIS KIT YOU WILL TAKE YOUR ENGINE TO A 155cc BEAST., Another company founded by Elon Musk tries to do what has never be done using technology that has yet to be tested on a scale that has never been attempted. The city of Chicago has..., This is by far one of the best GY6 QMJ157 upgrades you can make to your engine. If you want to take the guess work out of any tuning you may need to do, check out our Wide Band O2 Sensor. Attention buggy owners: This cable will not be long enough. It is up to you to source a proper throttle cable to work with this PWK carburetor., COMPARE TO STOCK GY6 125/150cc+ TRANSMISSION GEAR RATIO SET IS 13X40 THIS UPGEAR SET IS 17X36 = 2.17:1. GET THE MOST OUT OF YOUR BIG BORE KIT, WITH INCREASED TOP SPEED AND A MORE USABLE REV RANGE PERFORMANCE. FITS. STANDARD GY6 54mm SPACING (A-BLOCK) GY6 57mm SPACING (B-BLOCK) FITS MOST CHINESE SCOOTERS GY6 150cc MOTORS., Cylinder Kit (Aluminum, 61mm, 171cc); Genuine/GY6 150cc, ... New member here. I just traded my ps3 for a blown 2009 people 150. I just put a 61mm big bore kit in it and she's finally running once again. ... He raised the top speed to …, Time dilation is the reason why boring things seem to take so long but time flies when you're having fun. Learn how time dilation affects the speed of time. Advertisement Do you ev..., NCY 171cc Big Bore Kit For GY6. Sold Out. Another win by NCY. bolt on, gy6 150 kits to take your GY6 to 171cc. There is no case cutting required. As always jetting will be required for additional fuel. 125/150cc., Honda Big Ruckus Top Speed. If you’re loving the Ruckus style but want something with a little more power, chances are you’re considering the 250cc version, the Honda Big Ruckus. While this model was exceptionally short-lived (it was only produced from 2005-2006 in the US), it does benefit from a much higher top speed., Dec 25, 2020 ... Honda Grom Top End Build | Honda Grom Big Bore Kit ... How to install a big bore kit GY6 171cc / 172cc (61mm). ... Grom DHM 186 Review (Top speed, ..., Kickstart lever for GY6 125-150cc. CAD$ 15.99. Add to cart More. GY6 171cc (61mm) Cylinder Kit From NCY. Give your GY6 based scooter some serious power with this bolt on 171.3cc kit for most GY6 125/150cc engines. With this 61mm cylinder kit for the GY6 engine you dont have to bore the crankcase. With most 61mm big bore kits, you have to bore ..., NCY 171cc Big Bore Kit For GY6. Sold Out. Another win by NCY. bolt on, gy6 150 kits to take your GY6 to 171cc. There is no case cutting required. As always jetting will be required for additional fuel. 125/150cc. , Taida 61mm Forged Piston 2-Valve set 171cc for 4-stroke GY6 Engine. ... Koso Cylinder 61mm 170cc Big Bore Kit w/Forged Piston (Grom, Monkey 125) Koso Cylinder Gaskets 61mm Set Fit 21.5mm (Grom, ... Top-Racing Crankshaft Needle Bearing Reinforced 17x12x13mm (Honda Dio) TRS., Taida Cylinder Big Bore Kit Trio Combo 61mm 171cc 2V is suitable for all air-cooled 4-strokes; 125-150cc Kymco engines (scooters), and most Chinese imported vehicles GY6 …, 58.5mm (155cc) big bore kit for scooter atv kart with 150cc gy6 motors type #3 a. gy6store 155cc big bore kit for chinese scooters58.5mm bore (no boring required)take your stock 150cc gy6 motor to the next level with this no boring required drop in kit. with this kit you will take your engine to a 155cc beast set..., Product Description. TAIDA 172cc 61mm BIG BORE KIT (OD 62.7) HIGH PERFORMANCE FOR GY6 MOTORS. DROP IN KIT FOR GY6 SCOOTER 54mm STUD SPACING (A BLOCK) INCLUDES. *FOR STOCK GY6 BLOCK WITH 54mm SPACING ONLY*. OUTER CYLINDER DIAMETER 62.7mm MOST KITS ARE 65mm. CYLINDER BORE 61mm. CYLINDER HEIGHT 69.3mm., COMPLETE BUILDER ENGINE KIT:https://www.rollingwrenchdenver.com/products/gy6-171cc-builder-engine-kit-long-case?_pos=1&_sid=d02557169&_ss=rBECOME A MEMBER:ht... , Chess boxing, Football tennis, Bossaball: these hybrid sports are anything but boring. Chess boxing is the sport for anyone who’s every wished that you could win a board game by be..., Looking to expand your creative horizons? Being quarantined is the best time to keep busy and try something new. As COVID-19 cases in the U.S. continue to rise, many people will re..., Koso Cylinder 61mm 170cc Big Bore Kit w/Forged Piston (Grom, Monkey 125) Koso Cylinder Gaskets 61mm Set Fit 21.5mm (Grom, ... Top-Racing Crankshaft Needle Bearing Reinforced 17x12x13mm ... NCY Cylinder 61mm 171cc Kit (Part# 1100-1288); GY6 152QMI 157QMJ 161QMK 161QML Chinese Scooter, ATV, Kymco, Ruckus, ..., Naraku GY6 63mm Big Bore Kit for QMI152, QMI157, QMJ152, QMJ157, GY6 engines 180cc Big Bore Kit for GY6 based 125/150cc + engines. The bore is 63 mm, meaning the cases must be worked to accept the cylinder. This requires precision work, as the clearances are pushed somewhat., So when ordering a boring tool or any GY6 engine parts like cylinders, rocker arms, cylinder gaskets, make sure it says "fit 54mm" or "fit 57mm." This is covered in more detail in blog share GY6 Swap [Big Bore Kit]. Now, here are some GY6 big bore kit upgrades that will fit well in the GY6 B-Block. GY6 Engine Upgrade / GY6 Big Bore Kits, We pieced this kit together with the best of the best materials (rings, gaskets, springs, and metals) This 171cc kit (or as some call it 172cc)is a no case boring big bore kit unlike some others on the market. Its the largest big bore kit you can go on the GY6 A motor (Chinese GY6 QMJ157). Our 61mm kit is a drop in kit. Others on the market are ... , So when ordering a boring tool or any GY6 engine parts like cylinders, rocker arms, cylinder gaskets, make sure it says "fit 54mm" or "fit 57mm." This is covered in more detail in blog share GY6 Swap [Big Bore Kit]. Now, here are some GY6 big bore kit upgrades that will fit well in the GY6 B-Block. GY6 Engine Upgrade / GY6 Big Bore Kits, COMPARE TO STOCK GY6 125/150cc+ TRANSMISSION GEAR RATIO SET IS 13X40 THIS UPGEAR SET IS 17X36 = 2.17:1. GET THE MOST OUT OF YOUR BIG BORE KIT, WITH INCREASED TOP SPEED AND A MORE USABLE REV RANGE PERFORMANCE. FITS. STANDARD GY6 54mm SPACING (A-BLOCK) GY6 57mm SPACING (B-BLOCK) FITS MOST CHINESE SCOOTERS GY6 150cc MOTORS. , The Beast Big Bore Kit. $99.95 $129.95. Add to Cart. Why Would You Want To Ride A Scooter When You Could Be Riding A Beast. The Beast 100cc big bore kit is a top of the line kit for the QMB139 GY6 Engine. Made from high quality cast aluminum. This kit not only doubles the horsepower of your engine. So you can reach speeds of 50+ MPH., COMPARE TO STOCK GY6 125/150cc+ TRANSMISSION GEAR RATIO SET IS 13X40 THIS UPGEAR SET IS 17X36 = 2.17:1. GET THE MOST OUT OF YOUR BIG BORE KIT, WITH INCREASED TOP SPEED AND A MORE USABLE REV RANGE PERFORMANCE. FITS. STANDARD GY6 54mm SPACING (A-BLOCK) GY6 57mm SPACING (B-BLOCK) FITS MOST CHINESE SCOOTERS GY6 150cc MOTORS. , , GY6 171cc / 172cc Scooter Big Bore Kits (FITS QMJ157) From $149.00 Magnetic Drain Plug Kit. Regular price $25.00 GY6 Scooter Spark Plug (pre-gapped) Regular price $4.00 Sold Out. Scooter Fuel and Vacuum Line (Option to Add Fuel Filter) From $18.00 Sold Out ..., Top Compression Ring End Gap = Bore Diameter" x .004" Second Compression Ring End Gap = Bore Diameter" x .005" Since these measurements are done in inches, you'll need to convert your bore diameter from mm to in. Bore Diameter In Millimeters / 25.4 = Bore Diameter In Inches For example, my 72cc big bore kit uses a 47mm bore. 47mm / 25.4 …, Taida GY6 170cc Performance Engine Package - GY6 150cc. $48.99. $1,685.78. Create your own GY6 170cc big bore engine package! Starting with a 61mm cylinder kit will get you to 170cc without any machining or splitting of the engine case! Once you've chosen a forged or cast piston, select the additional add-ons and other options.