Grom Clone and Variants Bike Guide

[wlfpck]

I. Introduction

This guide is to cover the Honda Grom clones and the SSR Razkull clones. The clone bikes are meant to look exactly like the Honda Grom and the SSR Razkull. At this time, there are Kawasaki Z125pro clones on the market, but I have not seen them for sale in the U.S.

There's too many threads on:

What can I do with my Grom clone? What modifications will fit? What do I search for? Etc. Etc.

This will not include bikes like the Lifan KP Mini, Benelli TNT125/135, and Kymco Spade as those do not use a similar style engine. This will also not cover the Kawasaki z125, because it's not a clone. The z125 is a competitor to the Honda Grom. This guide also does not cover the Motrac bikes as they have fuel injection and (I believe) use a 3 bolt engine design that is similar to that of the Honda Grom.

There have been a lot of people on Facebook groups that think that being a competitor makes it a clone.
Being a competitor to the Grom does not make it a clone. A clone is NOT a competitor.

First the definition of "clone" from Merriam-Webster dictionary.

https://www.merriam-webster.com/dictionary/clone

Looking at the synonyms, there's "duplicate" and "copy".

Next, the Toyota Corolla is not a clone of the Honda Civic. The Chevy Cruze is not a clone of the Honda Civic. The Chevy Silverado is not a clone of the Ford F-150. These are all competitors and not clones.

A fake Rolex watch is a clone of a real Rolex. You would not consider the fake Rolex to be a competitor to the real one.

Another reason this guide will not cover the Lifan KP Mini, Benelli TNT125/135, and Kymco Spade is because they use a different engine than the SSR Razkull clones and Honda Grom clones. The SSR Razkull clones and the Honda Grom clones use a horizontal pit bike engine (CRF50 mouting specs) versus the vertical engine found in the Lifan KP Mini, Benelli TNT125/135, and Kymco Spade.

This guide is something that I've wanted to write for a while. I've been meaning to post this on my personal blog but figured this may be a better chance to do it since I don't have to get things set up by posting a thread here. I'll update it to my blog once I get that up and going.

II. The Bikes.

There are Grom clones and variants that appear different, but are similar enough to be part of this guide.

The main Grom clones are:

1. Boom Vader 1st Gen (Grom 1st gen clone).
2. Boom Vader 2nd Gen (Grom 2nd gen clone).
3. Icebear Fuerza (Grom 1st gen clone with stretched swingarm and lowered).
4. Taotao Hellcat (Grom 1st gen clone)

The main SSR Razkull clones are:

1. Boom lil duc (SSR Razkull clone)
2. Icebear lil monster (SSR Razkull clone)

The Boom bikes will register as a Jiangsu Baodiao Locomotive (make) and the model will be BD125-XX, depending on which Boom you buy. The US branch/company is Boom International.

The Icebear will register as a Huzhou Daixi Zhenhua Industry & Trade Co. Ltd. (make) and the model will be PMZ125-XX, depending on which model you have.

The Taotao Hellcat will register as a Taotao (make - needs to be checked).

Many places sell these bikes. A lot of places will also rename the bikes. For instance, the Venom Motorsports x20 is a Boom Vader 2nd Gen. When you go to register it, you'll still register it as a Baidiao BD125-(number for 2nd gen).

Another example is the Venom Motorsports x19R. This is the Icebear Fuerza which will register as a Daix PMZ125-1.

III. Differences between the bikes

The Grom is made by Honda and what the clones and the variants (SSR Razkull) are based on.

1. The Grom and the SSR Razkull use a 3 bolt engine mount design.
2. The Grom is fuel injected. The SSR Razkull and clones use a carburetor.
3. The Grom and SSR Razkull have exhaust ports pointed straight down. This means the SSR Razkull can use the same exhaust the Grom uses.
4. The clones use a 2 bolt engine mount pitbike engine that is based on the Honda crf50 engine design.

You can not use a Grom exhaust without modifications.

IV. What parts swap and what parts do NOT?

The Grom clones can use the Grom plastics. The SSR Razkull clones can use the SSR plastics.

Depending on Grom clone, you may need the inside plastic black pieces to get the Grom colored plastic pieces to fit. This includes the plastic under the seat which holds the battery and such.

People have gone from the Grom OG clone to the Grom SF clone. You will need to buy ALL the plastics to be able to do so.

Handlebars, footpegs, etc. will all swap between the two.

If you have an Icebear Fuerza and you want to use the Grom headlight, you'll need to pick up a Grom headlight bracket (the part that goes between the triple tree where the headlight bolts onto.

Differences:

No ECU chip on the Grom Clones. Unlike the Grom, there's no reflash or tune. There's no Aracer standalone. To tune the Grom Clones, you gotta play with the jet sizing in the carb.

No O2 sensor. Because the grom clones are carbed, there's no O2 sensor needed.

The fork (front suspension) are different. Unless someone has information otherwise, the Ohlins, Racing Bros, etc kits do not fit the Grom clone forks. It also appears that the Grom fork preload mod does not work either.

Not sure if this is the case for all of the Grom clones, but some have different steering stem bearings. Grom ones do not fit.

Electronics are different. The speedometer on the Grom Clones are driven off the front wheels speed. On the Grom it's driven off transmission speed. This is why on the Groms swapping front sprockets throw off the speedometer. On the Grom Clones, this is not an issue.

Engine parts will not match. Grom Clones use a pit bike engine (see previous section above). If parts are needed, look for Pit Bike engine parts.



V. Engine Performance Parts for the 125cc

These are the parts that you can use to get better performance out of the stock 125cc engine.

1. Mikuni VM22 carburetor
2. Honda Dax exhaust
3. Sprocket changes
4. Bore Kit

It is best to use a genuine Mikuni carb as that is the part that you have to tune to optimize the engine. This way you'll be able to use the genuine jets. You also don't have to worry as much about manufacturing defects and stuff like that.

The Grom/Razkull clones use pit bike engines and should have pit bike gearing. As such, going to a 17T front sprocket on these is not terrible. If you were on a Grom where the gearing is different, a 17T is too big for the front.

Bore kit... you'll need to figure out the bore and stroke of the engine that is in your Grom/Razkull clone and buy one that will work. Other parameters to check for is the wrist pin size. However, with the zs190cc on the market, owners should really consider this instead of a bore kit.

VI. ZS190 Engine Swaps

The best "bang for the buck" is the ZS190cc engine made by Zongshen. This engine is made in the same factory as the Daytona Anima engine. If you search in the ZS190 Swap Shop facebook group, you'll see that people have posted photos of the ZS190 internals where it appears that the Daytona logo has been ground off.

Unlike other swaps, you'll get a 5 speed transmission as well. Being that the ZS190 is the same design as the Daytona Anima engine, the 4V head and the 212cc bore kit will also fit as well.

If you join the ZS190 Swap Page, there is a guy selling the EFI kit that he has built himself that will go with the bike. At the time I'm writing this article, he has clocked in at 101.49 mph. That is with a zs190 engine with the 212cc bore kit and the 4V head while using a pwk36 carb.

Keep in mind that you'll see other companies selling a 190cc with 5-speed and electric start. These are the ZS190cc engines. Think to how the market works. Generally companies in the US will slap their logo/brand/etc. on a product that is produced in China. This is the case here. There are several companies, whom I am guessing, have contracted with Zong Shen to have their logo put on the clutch covers when they're delivered.

VII. Other Engine Swaps

The big question is why? The ZS190 can be purchased for $640 with carb and oil cooler. Any other engine like a 140cc would be cheaper but you would still have a 4 speed transmission and you wouldn't have awesome parts like a 4v head and bore kits available.

But... if you really want to swap something that is not a ZS190... then you'll need to look for a pitbike engine that has the Honda CRF50 engine mounting design. General statement (not always 100% true) is that you'll be looking for a horizontal pitbike engine.

References/Resources/Where to Buy

1. ZS190 Swap Shop (FB group)
2. Clone Army (FB group)
3. Pitster Pro
4. TBoltusa
5. Motorkit
6. Speedometer wiring diagram - http://www.chinariders.net/showthread.php?t=21374