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Predator 212 fitment

Parts & build guidance

Build your mini bike

Mini Bike Frame Kits & Roller Kits

New to mini bike builds? Start with the GMB100. Choose the RMB Rebel only for a dedicated drag build. Both require an engine and drivetrain before riding.

Not sure which one to buy? Start here.

First build or general riding Choose the GMB100

The simpler, lower-price starting point for most new builders.

See why

Straight-line drag build Choose the RMB Rebel

Choose it only when you specifically want a stretched drag chassis.

See why

Want to unbox and ride Choose neither kit

These are build projects, not complete running mini bikes.

Shop complete mini bikes

Why builders choose FRP

Spend less time matching parts

A bare frame can leave you sourcing wheels, brakes, forks and mounting hardware separately. FRP gives you a pre-assembled starting point with key components already matched for its intended build.

Fewer parts to match

Key chassis and brake hardware is already fitted. Check each kit below for the exact contents.

Predator 212 ready

Both platforms support the popular Honda GX-clone mounting pattern used by the Predator 212.

Hydraulic braking included

GMB100 includes a hydraulic disc brake; RMB Rebel uses a dual-piston rear brake with a 180mm rotor.

Two clear build paths

Choose GMB100 for a flexible custom build or RMB Rebel for a purpose-built drag chassis.

FRP Moto GMB100 Mini Bike Frame | Predator 212 Compatible | 99cc–212cc Custom Build | frp frpmoto mini bike dirt bike 99cc

Best first build

Recommended for most beginners

GMB100 Mini Bike Frame

An 85% pre-assembled general-purpose platform with a hydraulic brake and universal engine plate already fitted.

Choose this if:

This is your first build, you want a general-purpose mini bike, or you want the lower starting price.

$319.99 In stock

Less fabricationNo welding or drilling
Engine options79cc–225cc; Predator 212 ready
Already fittedHydraulic brake + universal plate
Build freedomGeneral custom platform
Still requiredEngine, clutch, chain + final setup

Choose GMB100 frame kit

RMB Rebel Drag Racing Mini Bike Roller Kit — Fits Predator 212 & Up

Drag builds only

Not the default first build

RMB Rebel Drag Roller Kit

A purpose-built drag rolling chassis that arrives 90% assembled, with the hard-to-match running gear and braking components already fitted.

Choose this if:

You already know you want a stretched, straight-line drag build and prefer matched running gear.

$579.99 In stock

Less parts hunting90% matched rolling chassis
Drag geometry43.4 in stretched wheelbase
Control hardwareStabilizer + 180mm hydraulic brake
Engine optionsPredator 212 + 196–224cc GX clones
Still requiredEngine, clutch, chain + final setup

Choose RMB Rebel roller

Important: Neither option is a complete running mini bike. Both require an engine and matched drivetrain before riding. I want a complete mini bike instead

Independent builders

See the GMB platform get built

These independent videos show real engine swaps and chassis upgrades on the GMB platform. Use the current product pages for final production fitment and included parts.

Pat Outdoors

Predator 224 Engine Swap and Fork Upgrade on the FRP GMB100

Barrios Builds

FRP Mini Bike Gets a Predator 224cc and Manual Clutch

The Goon3r

The Best Mini Bike Suspension Kit for the FRP GMB100

Owner feedback

What frame buyers say

4.7 out of 5 from 26 GMB100 frame reviews

★★★★★

“this frame is super sick right out of the box, if you’re looking for a mini bike definitely look into FRP they have everything you’ll need. mine is 212 swapped and it runs amazing threw a nibbi carb on it and this thing shreds.”

Lonzo_559 V. Product review

★★★★★

“Bolted a Predator 212 straight on. No mods, no drama.”

Morgan Brown Product review

★★★★★

“Honestly way better than I expected. Frame feels solid and heavy, not flimsy at all.”

Melissa Gray Product review

Choose your starting point

The GMB100 is a general custom-build platform. The RMB Rebel costs more because its drag-specific rolling chassis and running gear are already matched and assembled.

GMB100 mini bike frame kit compared with the RMB Rebel roller kit
Compare	GMB100 Frame Kit	RMB Rebel Roller Kit
Our recommendation	Best first build	Only for a dedicated drag build
Starting stage	85% pre-assembled frame kit	90% complete rolling chassis
Best for	General custom builds and GMB upgrades	Straight-line drag builds
Engine fit	79cc–225cc, including Predator 212	Predator 212, GX160/GX200, Tillotson 212 and 196–224cc GX clones
Included	85% pre-assembled GMB100 frame package, hydraulic brake and universal engine plate	Frame, fork, wheels, tires, rear hydraulic brake, rotor, 41T sprocket, seat, bars, grips and kill switch
Not included	Engine and build-specific drivetrain parts	Engine, clutch or torque converter, and chain
Brake	Hydraulic brake included	Dual-piston hydraulic rear brake; no front brake
Max load	220 lb	220 lb
Build work	Finish assembly; install engine and matched drivetrain	Install engine, drivetrain and final setup
Price	$319.99	$579.99
Shop	Shop frame kit	Shop roller kit

Questions, answered

Mini bike frame kit FAQ

What is the difference between a mini bike frame kit and a roller kit?

The GMB100 frame kit is an 85% pre-assembled general custom-build platform with a hydraulic brake and universal engine plate. The RMB Rebel is a 90% complete, purpose-built drag roller with its drag-specific fork, wheels, tires, rear brake, seat and bars already matched. Neither includes an engine.

Does a Predator 212 fit these mini bike frames?

Yes. A Predator 212 fits both the GMB100 frame kit and the RMB Rebel roller kit. The GMB100 uses a universal engine plate; the RMB Rebel uses the Honda GX-clone mounting pattern.

What comes with the GMB100 mini bike frame kit?

The current GMB100 listing is an 85% pre-assembled upgraded frame package with a hydraulic brake and universal engine mounting plate. The engine is not included; match the clutch or torque converter and chain to the engine and gearing you choose.

What comes with the RMB Rebel roller kit?

The RMB Rebel arrives as a 90% complete rolling chassis with the frame, fork, wheels, tires, rear hydraulic brake, rotor, 420-pitch 41T sprocket, seat, bars, grips and kill switch fitted. Add an engine, clutch or torque converter, and chain.

What engines fit the RMB Rebel roller kit?

It fits the Honda GX-clone pattern: Predator 212, Honda GX160/GX200, Titan TX200, Tillotson 212 and 196–224cc clones with a 3/4-inch shaft. Briggs Animal engines require an adapter plate.

Do I need to weld a mini bike frame kit?

No welding is required for the standard GMB100 or RMB Rebel build path. Mounting points are already provided, but you still need normal mechanical tools and must confirm drivetrain alignment during assembly.

Are these complete, ready-to-ride mini bikes?

No. The GMB100 frame kit is a ground-up build platform, and the RMB Rebel is a rolling chassis. If you want a running bike instead of a build project, shop the complete mini bike collection.