P# TBW9208 List:$249.99 MXP:$230.00
TB KLX140 Big Bore Kit & Performance Cam – All KLX140s

TBparts 170cc Bore Kit and performance camshaft.
These parts work great together for an unmatched performance increase.
Starting with the complete big bore kit you get a lightweight high compression piston that is 5mm over stock making close to 50% more power.
Add the performance cam and the bike will start making even more power at 5500 RPM and carry it to the top end for even larger gains.
Turning your KLX140 into a race ready machine or a backyard sleeper!
This is one of the best, if not the best kit you can run on your KLX140 to reliably wake it up without breaking the bank.
We stock replacements for everything in this kit and jets for the OEM carb are linked below.

Kit features: Huge power gains at the best price!
Aluminum cylinder with steel sleeve (63mm)
High compression 63mm piston with rings, pin, & clips (Safe on 91+ Octane Pump Fuel)
(Note: The arrow on the piston marks the intake exhaust flow/valve relief)
Top end gasket kit
Brand new camshaft and bearings...This kit does not require boring of the case – simply 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 for your bike available from your local Kawasaki dealer.
The parts are installed in the same manner as the OEM parts.
Our tech section is continuing to grow as we add the answers to commonly asked questions in our – Kawi Tech Section.

Installation note – KLX140 camshaft bolts are reverse threaded, turn them right/clockwise to loosen/remove.
Factory Carb Starting point for jetting is #40 or #42 Pilot and Main Jet #100 or #105.
A performance exhaust will require a larger main jet #105 – #110

 FREE SHIPPING !!!

 if you want your KLX140 to "scream " this is the kit for you ! 
 
 
 P#411-KLX-1801    LIST:$269.95  MXP:$249.00
 
KLX140 Bore Kit - 170cc High quality bore kit that shows substantial power gains throughout the RPM range. 63mm piston.
10.5:1 compression ratio allows use of premium pump gas.
Complete kit includes: cylinder, piston, ring set, pin, clips and gaskets. 

 Brand new high quality BBR aluminum cylinder
10.5:1 compression ratio
63mm piston
Includes cylinder, piston, pin, rings, and gaskets 

FREE SHIPPING!

P# TBW9204 List:$179.99 MXP:$169.00
TB 170cc Big Bore Kit – KLX140

TB 170cc Big Bore Kit will make your KLX140 a lot more fun to ride by adding some much needed power.
This kit does not require boring of the case – simply bolt on and go!!

This Big Bore Performance Kit features the following:

– Aluminum cylinder with steel sleeve (63mm)
– High compression 63mm piston with rings, pin, & clips (Safe on 91+ Octane Pump Fuel)
(Note: The arrow on the piston marks the intake exhaust flow/valve relief)
– Top end gasket kit

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 for your bike available from your local Kawasaki dealer.
The parts are installed in the same manner as the OEM parts.

Note – A good jetting base for the factory carburetor is +1 size Pilot jet and +1 or 2 sizes up on the main jet.

Installation note – KLX140 camshaft bolts are reverse threaded, turn them right/clockwise to loosen/remove

SOLD OUT

FREE SHIPPING

P# TBW9206 List:$364.99 MXP:$345.00
TB KLX140 Big Bore Kit, Mikuni VM26, & Carb Kit – All KLX140s

TBparts 170cc Bore Kit with the our Mikuni VM26 performance carb kit.
These parts work great together for an unmatched performance increase.
Starting with the complete big bore kit you get a lightweight high compression piston that is 5mm over stock making close to 50% more power.
Add the 6mm larger VM26 carburetor
(that utilizes the stock air box) and the bike will not only start up and idle better but it also feeds the engine more air and fuel to make more power through the entire powerband.
This is one of the best, if not the best kit you can run on your KLX140 to reliably wake it up without breaking the bank.
Also using the stock camshaft keeps this engines smooth running characteristics that are great for trails!
We stock replacements for everything in this kit and jets for the carb. Not to mention we are continuing to grow our performance and replacement KLX140 parts lineup!

Kit features:  Huge power gains at the best price!
Aluminum cylinder with steel sleeve (63mm)
High compression 63mm piston with rings, pin, & clips (Safe on 91+ Octane Pump Fuel)
(Note: The arrow on the piston marks the intake exhaust flow/valve relief)
Top end gasket kit
Genuine Mikuni VM26mm Performance Carb (Not a cheap Chinese copy carb)
Intake Kit port matched to the VM26 and stock cylinder head
Main Jet kit (Stock Main Jet size is a #190 – Extra jets sizes 140, 145, 150, 155 (x 2), 160, 165 (x 2), 170, 175 (x 2), 180, & 185.)
Extended Throttle Cable for use with the stock bars and throttle or tall bars.

This kit does not require boring of the case – simply 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 for your bike available from your local Kawasaki dealer.
The parts are installed in the same manner as the OEM parts.

Installation note – KLX140 camshaft bolts are reverse threaded, turn them right/clockwise to loosen/remove.
A good jet starting point is the factory #22.5 Pilot and #180 main with the stock pipe.

SOLD OUT

 
P# TBW9205 LIST:$199.99 MXP:$189.00
26mm Performance Carb Kit, Mikuni VM26 – KLX140
Mikuni VM26mm Performance Carb Kit

This is one of the best, if not the best, carb kit to run on the KLX140 with or without a big bore kit!

The Mikuni VM26 has a proven track record of high performance, quality, and easy tuning.

The VM26 is +6mm larger than the factory carb so the bike will pick up power everywhere while utilizing the stock air box/filter.

We stock replacements for everything in this kit, jets for the carb, and for comparison a replacement OEM carburetor is over $320 alone!

The kit includes:

Genuine Mikuni VM26mm Performance Carb (Not a cheap Chinese copy carb)
Intake Kit port matched to the VM26 and stock cylinder head
Main Jet kit (Stock Main Jet size is a #190 – Extra jets sizes 140, 145, 150, 155 (x 2), 160, 165 (x 2), 170, 175 (x 2), 180, & 185.)
Extended Throttle Cable for use with the stock bars and throttle or tall bars.

P# 411-KLX-1820 Camshaft - High Performance / KLX140/L/G, 08-Present
List:$178.95 MXP:$165.00

KLX140 Performance Camshaft

A brand new camshaft purpose built for the KLX140! The KLX140 is the ultimate trail bike.
It just needs a little more power.
The valves and ports are big. Kawasaki put on a tiny corked up exhaust, a tiny camshaft, tiny carb, and low compression piston.
Our 170 kit fixes the piston side of it and lots of great exhausts already exist.
Now we have the solution to the camshaft side.

This new camshaft grind benefits from all the years of BBR testing, racing, and development.
It is the latest and greatest of what we offer and hands-down the single best improvement of any camshaft we've built to date.
We've been durability testing this thing all year and we haven't had a single engine failure related to this camshaft.
The best part is it will still run on 92 octane - so you can hit the trails and not drive around looking for race gas

Note: The BBR KLX140 Performance Camshaft installs the same as the OEM camshaft (valve clearance IN: .002"-.003" / EX: .004"-.006").
We recommend you purchase an OEM Kawasaki KLX140 Service Manual to assist you when installing this camshaft.

P# TBW0488 List:$132.99 MXP:$121.00

Mikuni VM28-418, Flat slide 28mm Carburetor
Carburetor Size 28mm

Mikuni’s TM series carburetors utilize a modern designed flat slide
to produce significant performance improvements over round slide carburetors.
Air flows faster and smoother due to the more efficient flat slide and jet blocks.
These improvements produce a stronger vacuum at the needle jet to offer precise fuel metering and better throttle response.

Specifications –

Carburetor Mount – Spigot / 33mm
Carburetor Intake/Air filter Bell Outside Diameter – 44mm
Carburetor Depth x Height x Width – 82x135x76mm

Note: Mikuni’s SKU# of this part is VM28-418 even though it is a part of the TM Flat Slide series.

 P# 240-KLX-1431  LIST:$419.95  MXP:$385.00  CYBER WEEK ONLY!!! $370.00

IN STOCK

FREE SHIPPING IN THE STATES ONLY!!! 

Exhaust System - D3, Silver / KLX140

BBR's new D3 exhaust is the latest generation in BBR's legendary D-Section exhaust systems.
This design incorporates an air-craft quality stainless steel header that has been tuned specifically to optimize performance and power gains.
An all new, lightweight "D" profile muffler is used to drastically reduce weight on all models.
BBR's unique "D" muffler also allows for maximum tire clearance and packing volume.
A lightweight carbon fiber endcap incorporates a chrome "D3" emblem.
The head shield is also carbon fiber and includes drilled "Works Type" washers.

For all applications, the new BBR D2, come as complete systems including header and muffler.
A USDA Forest Service approved spark arrester is included.
If you need to reduce the dB level, BBR offers an optional Cancel Core Insert, that will keep the neighbors happy.

Every BBR D3 exhaust includes a rubber end plug, for use when washing your bike, as well as a spring puller to ease installation.
We've thrown in a bunch of decals, heat shield tape, and put these accessories in a BBR black canvass zipper case.

    Lightweight 6061 aluminum muffler with carbon fiber end cap
    Thin-wall stainless steel header and mid-pipe
    Carbon Fiber heat shield
    All stainless steel hardware through-out
    Includes BBR jet wash end plug, spring puller, decal pack, heat shield tape, and black BBR zipper bag

P# 09-4813  LIST:$379.99  MXP:$339.00

Big Gun exhaust system 

EVO R Full System – Kawasaki KLX 140G (17-20)

 EVO R Full System – Kawasaki KLX 140 / L (08-20)

 EVO R Full System – Kawasaki KLX 140 / R (2021)

Hard anodized oval shaped aluminum muffler –

TIG welded reinforced muffler bracket –

304 stainless steel mid pipe / head pipe –

Red powder coated stainless steel end tip –

Lighter than stock exhaust –

Massive horsepower and torque gains –

Sleek muffler design allows for maximum clearance –

Removable screen-type USFS approved spark arrestor –

Handmade in the USA

FREE SHIPPING!

P# TBW1609  List:$279.99  MXP:$269.00

 TB Rear Shock,
Adjustable Compression & Rebound – KLX140 all Models

TB Rear Shock, Adjustable Compression & Rebound – KLX140 all Models

TBparts adjustable rear shock for the Kawasaki KLX140!
We worked with DNM to make a rear shock geared toward racing on a MX track!
First our shock uses a heavy 350# spring.
This gives you the base to stiffen up your suspension and push it harder and farther!
Next is the adjustability to the compression and rebound.
This works much better than the OEM shock and allows you to dial the shock in to your exact preferences and needs with just a few clicks.
The stroke of this shock is also longer (At least 14mm from what we measured) giving you more travel at the rear wheel!
Once install your KLX140 will be much better suited for MX applications.
This will work with all models, but we recommend you at least have HD fork springs if you use this rear shock (Front fork Springs are very soft).
This rear shock offers huge value and performance compared to an OEM KLX140L shock that goes for $350+ !

Key Features & Specifications:

    350# spring great for aggressive MX style riding
    Adjustable Compression
    Adjustable rebound
    405mm eye to eye
    100mm stroke (our OEM KLX140L shock measured 86mm)
    Includes new bushings
    Slick black appearance
    Direct bolt on, no modifications needed on any model.
    Huge Value at $279!

Installation Note – Please inspect your OEM shock bolts, linkage bolts, and bushings/bearings.
If they are worn or bent your suspension will not function properly and it will cause excessive wear.
Also be sure all linkage bolts stay torqued to spec.
These are common issues we see that can easily be avoided,
they ensure a smooth feel and long life out of your rear shock.

660-HCR-8005 LIST:$119.95 MXP:$108.00
Kawasaki KLX140
Shock Spring - KLX140L 08-Present
Designed for adult riders and aggressive kids. Pre-set and stress-relieved for long life
Important Note: These springs will only fit the KLX140L. They are not for use in the standard KLX140.

650-KLX-1505  LIST:$99.95 MXP:$89.00

Kawasaki KLX140

Fork Springs - KLX140G, 17-Present

Custom developed by BBR Motorsports for the ultimate upgrade for mini four-strokes.

Sized perfectly for adult back-yard racing or fast/aggressive mini riders.

This is the most important upgrade you can make for an adult sized rider.

The stock suspension is too soft for most adults and agressive kids.

• 30% stiffer than stock
• Preset and stress relieved for long life
• Custom wound from aircraft quality spring steel

Important Note: These springs will only fit the KLX140G.

They are not for use in the standard KLX140.

650-KLX-1405  LIST:$99.95 MXP:$89.00

Kawasaki KLX140

Fork Springs - KLX140L, 08-Present

Custom developed by BBR Motorsports for the ultimate upgrade for mini four-strokes.

Sized perfectly for adult back-yard racing or fast/aggressive mini riders.

This is the most important upgrade you can make for an adult sized rider.

The stock suspension is too soft for most adults and agressive kids.

• 30% stiffer than stock
• Preset and stress relieved for long life
• Custom wound from aircraft quality spring steel

Important Note: These springs will fit the KLX140L and non L.
These springs will also fit the R model. They are not for use in the standard KLX140G.

SOLD OUT

 LIST:$119.95 MXP:$108.00

451-KLX-1102 Rev Box - Kawasaki / KLX110/L, KLX140/L/G 10-Present

Let your KLX110 (2010 and newer) or your KLX140/L/G perform it's best!

This box moves up the rev limiter allowing higher revs.

It also has a hotter advance curve from the OEM box.

This allows for a bit crisper throttle response and easier starting.

This is a "must have" for modified KLX110's and KLX140's.

P# 110-HCR-1203 MXP:$59.00

Gas Cap - Billet, "X" / KLX140/KLX110 10-Present

The original and most popular cap. Billet machined 6061-T6 aluminum gas cap with black anodized nipple breather.

Billet machined 6061-T6 aluminum gas cap with a black anodized center section with a gas resistant rubber seal
Large palm grip body for easy spin on and off
Tapered seal surface to prevent fuel leaks

Fits: CRF250R 04, CRF450R 02-04, XR200R 88-02, XR250R 88-03, XR400R 96-03, XR600/650R All, KLX140 08-Present, KLX110/L 10

P# KLX140TallSeat MXP:$125.00

Tall Seat - Foam W/Cover KLX140
Tall seat foam with non-slip black seat cover
Flatter mid-section

P#MXPHP MXP:$225.00

Free Shipping Back To You.

HEAD PORTING

Honda CRF 100 / CRF 80 / CRF110 /CRF150F / KLX110 KLX140 TTR110 / TTR125 Head Porting
Increased Flow and Efficiency

New heads are available, pending availability.

Price advertised is for, disassembling and porting the head and reassemble / lapping the valves, Your head will be ready to install back on your bike, out of the box...

We would recommend the customer sends new valve seals with their head because any parts we would need to order would add time to the service.

This works great with 120 cc kits 170cc kits an stock motors.

P# TBW1515 List:$81.99 MXP:$71.00

TB Camshaft, Performance – All KLX140
Easy bolt on power for your Kawasaki KLX140! This TBparts High Performance Camshaft is for use with either the stock bore or our 63mm/170cc Big Bore Kit.  You will not find a better cam for the price! Starting around 5,000 RPM this cam starts making significantly more power than the OEM cam and carries it all the way to the top end allowing you to rev out farther and make more power! As with all our cams, the quality is also exceptional and not a regrind OEM cam.

Features:

Well over 1hp gain in stock applications
Brand new camshaft and bearings
Works great with the stock cylinder head on a stock or modified KLX140
(Installation note – KLX140 camshaft bolts are reverse threaded, turn them right/clockwise to loosen/remove)