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Description
TB V2 Race Head Kit & 52mm/88cc Big Bore Kit – Honda 50cc & 70cc Various ModelsTB V2 Race Head Kit & 52mm 88cc Big Bore Kit Honda 50cc & 70cc Various Models TB V2 Race Head Kit & 52mm 88cc Big Bore Kit Honda 50cc & 70cc Various Models TBparts V2 Race Head Kit & 52mm 88cc Bore Kit. Converts the following stock models to 88cc: 1982 and newer Honda Z50, XR50, XR70, CRF50, CRF70, & 91 94 CT70 Starting with the V2 cylinder heads larger stainless steel (21 4N) valves, better porting, roller cam, and forged aluminum roller rocker arms
TB V2 Race Head Kit & 52mm/88cc Big Bore Kit – Honda 50cc & 70cc Various Models
TB V2 Race Head Kit & 52mm/88cc Big Bore Kit – Honda 50cc & 70cc Various Models
TBparts V2 Race Head Kit & 52mm/88cc Bore Kit. Converts the following stock models to 88cc: 1982 and newer Honda Z50, XR50, XR70, CRF50, CRF70, & 91-94 CT70
Starting with the V2 cylinder head’s larger stainless steel (21-4N) valves, better porting, roller cam, and forged aluminum roller rocker arms that allow the engine to rev quicker, farther, and make much more power than the stock setup. Add the high compression 52mm bore kit that brings up the bore to 88cc and makes for a strong power band adding up to a professional level of performance at an affordable price for the privateer rider. These are high quality parts and require no machining to the cases or other modifications – bolt on and go! There are no installation instructions, but if you can replace your piston, you can install this kit. If you don’t have any experience working on your engine, we highly recommend having a professional technician install this kit or, at a minimum, purchasing the shop manual.
Key Features:
- Race Head V2 – Aluminum roller rockers, 28.5mm intake valve, 23.5mm exhaust valve, 26mm intake port, 23mm exhaust port, covers and hardware included (valve, seals, and springs installed).
- Race Camshaft
- 52mm Aluminum Steel Sleeve Cylinder
- 52mm High Compression Light Weight Piston Kit (91+ octane pump fuel friendly)
- 52mm Top End Gasket
- No case boring
- We stock all the replacement parts for this kit, no ridiculous wait times or prices for these High Performance spares.
Note: Only for use with 1988 and newer Honda Z50, CT70, XR50, XR70, CRF50, CRF70, & 91-94 CT70. 1991 and older engines will need TBW0861
Installation Note: V2 head notes https://www.tbparts.com/wp-content/uploads/2022/03/V2-Cylinder-Head-Notes-Honda-PDF.pdf
Kit Contents by Part Number: TBW0750, TBW0755, TBW0752, TBW1441, TBW0753, TBW0859, TBW0156
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 2433 reviews
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Product Reviews
★★★★★ 5
VERY IMPRESSED. ONE OF MY FAVORITE CREDIT CARDS
Style: Prime Visa
After reading through well over 150 customer reviews, I was extremely hesitant about applying for the Chase Amazon Prime Visa Rewards card. I have been an avid Amazon customer for over 15 years... So, I am definitely a person that would greatly benefit from having/using an Amazon credit card that offers 5% cash back and interest free payment plans on Amazon.com purchases. Even so, and even though I knew that my credit score was more than high enough; I still chose to hold off on applying for the card for several years.
The main reason I hesitated was because there were so many negative reviews on here. Specifically, the ones written by people (who claimed to have good credit) stating that the only reason they got denied was because they had more than 2 or 3 hard inquiries within the past year. Some of them even said that they were initially approved and then later received a denial letter. After reading countless reviews like that, I figured that there was no way I would qualify/get approved.
That was how I felt up until 2 months ago. On July 1st, I finally decided that the potential reward was worth the risk. So I applied and was instantly approved! The $200 promotional Amazon store credit was immediately added to my account! The card was also automatically added as my default method of payment as well. It was super exciting! I am so glad that I decided to take the risk and apply that day.
I honestly expected Chase to either deny me, require more time to make their decision, or change their mind after the fact... I expected this for 2 main reasons: #1 because my credit score was not the greatest at the time when I applied (due to my utilization rate=over 40%). #2 I knew that I had at least 5-6 recent hard inquiries that had all occurred within the last year.
POSITIVE ASPECTS THAT I FEEL ARE WORTH MENTIONING:
Chase was very generous with the amount of time that they automatically allowed me between the date of my initial purchase and the due date (when my first payment was due). For whatever reason, Chase allotted me a total of 54 days! My first purchase occurred on July 1st. My first payment was due on/by August 25th! 54 days is wayyyyy longer than I have ever had with any of my other credit cards. So much so, that it's caused me to wonder if Chase does this to ensure that the customer has received their physical card in time. (There were several negative reviews where people said that they were forced to pay their first statement after the initial due date (subject to late fees and derogatory remarks in their credit history) because of the fact that it took well over a month for them to finally receive their physical card.) I can only attest to my personal experience, which I fortunately received my physical card within 11 business days (which means that I actually received it 3 days earlier than what I was told to expect.)
Chase makes it simple and easy to understand/know how much of the total balance needs to be paid in order for you to avoid any interest charges/fees. I have felt burdened in the past anytime I've used a card to make both promotional period 0% interest purchases as well as regular purchases. That's because some card company's tend to be vague when it comes to letting you know the exact amount to pay to avoid paying interest (surprising, right? lol). Chase lists both the total statement balance as well as the minimum balance you have to pay to avoid any interest charges.
I am satisfied with the way the cash back balance rewards system works. It would be nice if Chase would allow customers to earn some level of cash back incentives on purchases that are classified as no interest special financing for a pre-determined promotional period purchases... Even if customers didn't receive the full 5% cash back percentage...
This card can be used anywhere that VISA is accepted! It even offers 3% cash back incentive for gas station purchases while also offering other cash back incentives as well. I think that this is such a great feature that I did not expect!
This is the longest review that I have ever written. I took the time to write all of this because I know that there are other people out there (who have read the reviews and thus are hesitant like I once was).
Thank you for taking the time to read my novel.
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Reviewed in the United States on August 30, 2022
★★★★★ 5
Easy to use cash back and reconcile charges to purchases.
Style: Prime Visa
The Prime Visa is a great way to get 5% cash back on your purchases. Chase makes it easy to have it sent to the bank of your choice or you can apply against future purchases with Amazon. Amazon and Chase also make it easy to reconcile your transactions with Amazon and charges to Chase card. If you have a question on your chase card you can look on line realtime, select the greater than symbol> and it will take you to the transaction in Amazons Orders and Returns so you can see the charges were for. High Five for both companies.
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Reviewed in the United States on May 27, 2026
★★★★★ 4
Great Card With Strong Rewards — Minor Durability Issue
Style: Prime Visa
I’ve really enjoyed the Amazon Prime Visa Credit Card overall. The rewards structure is genuinely useful — getting 5% back on Amazon.com, Whole Foods Market, and Chase Travel purchases adds up fast, and the 2% back at gas stations, restaurants, and on local transit is a nice everyday boost. The fact that there’s no annual fee or foreign transaction fees makes it even better, especially for a card tied to a Prime membership.
My only complaint, and the reason for four stars instead of five, is that the chip stopped working after about a year of regular use. The card still works with tap and swipe, but it’s inconvenient when a terminal requires chip-only transactions.
Aside from that hiccup, it’s been a great rewards card and definitely worth having if you’re a frequent Amazon or Whole Foods shopper.
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Reviewed in the United States on April 15, 2026
★★★★★ 5
A useful card for Amazon Members, with No Annual Fee, and enticing Sign-Up Offers!
Style: Prime Visa
I signed up for my Chase Amazon Prime Visa card about a year ago, when they were running a $150 gift card offer upon approval promotion. For me, it was a no-brainer, since that covered a year of Prime at $139, and I was able to order some things I needed at the time.
I haven't used it a ton since then, but there are solid perks for everyday users, like 5% cash back on all Amazon Purchases, Whole Foods, Chase Travel - 2% on all dining, gas, local transit/rideshare - 1% on all other purchases - and then some rotating promotional offers like 10% back on certain Prime Deals.
I mostly use my Chase Sapphire Preferred Travel card for the slightly better perks, but this is a nice card to have as a supplement and wouldn't be a bad choice for someone who shops on Amazon frequently. And the No Annual Fee makes it kind of a "why not?" type decision, in my mind!
Just make sure to check which Gift Card promo they are running before you sign up, because I saw it go as high as $250 after I signed up.
- Shea
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Great card if you buy a lot on Amazon and don't carry a balance
Style: Prime Visa
**This is a review of the 2017 version**
THE BASICS: This is a credit card. It gives you 5% back at Amazon (only 3% if you don't have Prime) and 2% back at gas stations, restaurants, and drug stores. So far it seems to be a fantastic card if you do a lot of shopping at Amazon and don't carry a balance, and maybe a not-so-fantastic card if you do not do those things.
REWARDS: From what I've seen, cash back type cards seem to come in two flavors. One kind gives you 5%ish back on one category (often this rotates, but it will just be one at a time) and 1% back on everything else. The other kind gives you 1.5 or 2%ish back on everything. This card is technically of the former variety, but since you can buy almost anything on Amazon, if you're the sort of person who does buy almost everything on Amazon, it's kind of like 5% back on everything. And then it gives 2% back on gas and restaurants, which are two things you can't really use Amazon for. At the time I applied, it also offered a $70 Amazon gift card as a sign up bonus. I received this promptly, but I don't think on its own the gift card is a very good reason to get a new credit card. This card is also not a good reason to sign up for Prime if you don't already want it---you'd have to spend an awful lot to make back the Prime fee (and if you buy that much stuff on Amazon, why don't you have Prime already?).
CHASE: This card is offered through Chase, and a lot of people don't like Chase. But I suspect a lot of people don't like whatever bank they have to deal with, and I've never had any problems with Chase (before this card, I also had a checking account, savings account, car loan, and another credit card---the Freedom---with them). My suspicion is that Chase might be slightly less willing to engage with people it considers risks than some banks are, so if you tend to max out your cards, etc., it might not be the bank for you (but this opinion is just based on reading other people's stories on the internet). I haven't interacted with them over this card (which I have had for a couple of months---long enough to have paid my first bill and know that they accepted that and didn't charge me unfair interest, but not long enough to have had tons of things come up), but when I've had to interact with them over other things it has always gone well (for example, when the number for my Freedom was stolen a while back they dealt with all the fraudulent charges and overnighted me a new card). I've seen some reviewers complaining about their website, but I don't think it's terribly confusing, and I can definitely pay my bills and view my statements easily from it. I suppose one thing to keep in mind is that it is the Chase website you'll be dealing with and not an Amazon one, so if you're expecting to be able to pay your bills on the Amazon website this might be a shock.
APPLICATION PROCESS: I just filled out a form and received my approval message like 15 seconds later or something. I don't remember all the questions, so I guess there wasn't anything too surprising. The card immediately showed up in my Chase app and on Amazon, but the physical card took about a week to get here in the mail. One thing to note is that I filled out my application on the 18th of a month, and now all my statements end on the 17th or 18th and my bills are due on the 14th. I might be able to change this number (I haven't tried because I don't really care) but if you care about when in the month your bills are due and don't want to take any chances you should think about when you apply.
CREDIT LIMIT/APR: Some people have complained about tiny limits for this card, and I did not have that experience (or maybe I just have a different idea of tiny---but I would say anything over my monthly takehome pay is not 'tiny'). When I got my Freedom from Chase, however, I did not have much credit history and they gave me a very tiny limit (so tiny I was paying off the card several times a month). After a year or so of perfect payments I requested an increase and they gave me a much bigger one than I'd asked for and have since raised my limit twice of their own accord. So my guess is that if you would like to use the card at some point and just have an issue with the limit, it's worth keeping it open, because Chase is definitely willing to raise limits in response to good behavior. The APR that I got when I applied is 19.74% (but it varies---both with your credit score and with the market rate), and I think it would be foolish to carry a balance at that rate.
I tried to cover everything I could think of, but if you have questions feel free to leave them in the comments and I will do my best to answer. I will also try to update the review if I later have a bad experience with the card.
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Reviewed in the United States on April 29, 2017