TBW0928 LIST:$139.99 MXP:$128.00

TB Stock Head, 88cc Bore Kit ? HONDA XR / CRF50 88-20
88cc Big Bore
Performance Kit (52mm):

? Lightweight
aluminum cylinder with steel sleeve
? Cast in mounts on cylinder for aftermarket skid plates
? Oversized cooling fins on cylinder for efficient heat dissipation
? High compression 52mm piston with rings, pin, & clips
? Head gasket kit

We recommend purchasing a high
volume oil pump kit (available in this section).

Installation Note: It will save a
lot of time and effort if the oil pump is installed while installing the bore
kit (requires cylinder removal).

TBW0930 LIST:$251.99 MXP:$230.00

 
TB Stock Head, 88cc Bore Kit, 20mm Carb Kit & Cam XR / CRF50 88-20

88cc Big Bore kit,
20mm Carburetor kit, and Race Cam Performance Kit:

? Lightweight aluminum cylinder with steel sleeve
? Cast in mounts on cylinder for aftermarket skid plates
? Oversized cooling fins on cylinder for efficient heat dissipation
? High compression 52mm piston with rings, pin, & clips
? Head gasket kit
? High performance race camshaft for stock head
? 20mm Performance carb assembly. Includes: 20mm carb,
intake, heatstop, gaskets, mounting hardware/wrench,

angled dual foam air filter and long throttle cable
? NEW! 12/08 ? a main jet kit is now
included too!

Easily double your power and fun with this quality, yet economical
bore kit!!

We recommend purchasing a high volume oil pump kit
(available in this section).

Installation Note: It will save a lot of time and
effort if the oil pump is installed while installing the bore kit (requires
cylinder removal).

See the Performance Info section for additional
information on our performance parts.

TBW0936 LIST:$394.99 MXP:$379.00

TB Race Head, 88cc Big Bore Kit & 20mm Carb Kit ? Z50R, XR50, XR70 and Other Models

This complete 88cc Race Head Kit will really wake up your stock engine
and is comparable in power to the much larger Chinese 124cc engines!!!
They are extremely reliable as well! This kit works on the following models:

88 thru present Z50R, XR50, and CRF50
All XR70 and CRF70

(Note: For the 88-91 Z50R, the newer style 2 bolt cam sprocket will be needed.
We have them available in this section and the part number is TBW0861)

This kit includes the following items:

UPDATE ? Until further notice, this kit will also include the following items at no extra charge!!!

6 Piece main jet kit for the 20mm carb ($10 savings)
High Volume oil pump ($25 savings)
Clutch cover gasket ($3 savings)
Performance CDI ($25 savings)

$63 total savings

Lightweight aluminum cylinder with steel sleeve
Cast in mounts on cylinder for aftermarket skid plates
Oversized cooling fins on cylinder for efficient heat dissipation
52mm high compression piston with rings, pin, & clips
Head gasket kit and clutch cover gasket.
High performance race camshaft (for the Race Head only)
Race Head with larger 25/22mm stainless steel (21-4N material)
valves for better flow and increased performance.
Also has bigger cooling fins.
Includes all necessary parts and comes assembled!
20mm Performance carb assembly. Includes: 20mm carb,
port matched intake, heatstop, gaskets, mounting hardware/wrench,
long adjustable throttle cable, and an angled dual layer foam air filter.

Installation Note: It will save a lot of time and effort if the oil pump
is installed while installing the bore kit (requires cylinder removal).

TBW0968A  LIST:$569.99 MXP:$530.00

 TB 108cc Stroker Stage 3 Kit    XR / CRF50 88-20

This kit is the complete kit to convert your stock motor
into a powerful open class 108cc engine (much more powerful than
the common Chinese 107 and 125cc engines). 

Also, this crank was made specifically for the newer
engines and thus, you will not have any fitment issues like trimming the piston
skirts in order to clear the crank or the piston not lining up with the cylinder
deck. The kit includes the following parts:

? 51mm Crankshaft with NTN bearings
? High compression piston with rings, pin, & clips
? NEW Race Head ? Larger valves (now
25/22mm) and better flow for increased
performance. Also has bigger cooling fins.

Includes all necessary parts and
comes assembled!
? Lightweight aluminum cylinder with steel sleeve, cast in mounts for skid
plates, and larger cooling fins.
? High performance race camshaft 
? NEW Genuine Mikuni VM26mm Performance Carb
? Intake Kit
? Jet kit with 3 different sizes (Stock size is a #195 ? Extra jets sizes of
155, 165 & 175)
? Throttle Cable
? NEW Dual Layered Foam Air Filter 
? Crankcase and clutch cover gaskets
? Head gasket kit. This kit requires engine disassembly and therefore, we highly recommend a
professional technician install this kit. If you plan on doing it yourself, you
will need to have a Clymer or Honda shop manual. Instructions do not come with
the kits but the installation of the crankshaft is just like installing a stock Honda
crankshaft. You should also have the following parts:

? High volume oil pump
? Oil Cooler
? CR8HSA spark plug (not required, but recommended)
? If you purchased one of our Manual Clutch Kits prior to
6/30/05, will recommend purchasing the Upgrade Disk Kit that we have available.

Additionally, we
do not recommend the use of an inner rotor kit with this clutch (on a 108cc or
larger engine) as it can lead to premature clutch failure due to extra fatigue
placed on the
clutch housing. However, we offer an upgrade which allows use of inner rotor
kits and larger displacement engines ? Please see the Billet Housing upgrade
we have available for more details. Also, do not
tighten the clutch nut with a hammer and screw driver ? it must be torqued on!

TBW0966A LIST:$163.99 MXP:$150.00

 Stroker Kit 1

This is an affordable kit that will convert your TB 88cc
Race Head kit into a powerful open class 108cc engine (much more powerful than
the common Chinese 107 and 125cc engines).  Also, this crank was made specifically
for the newer engines and thus, you will not have any fitment issues like
trimming the piston skirts in order to clear the crank or the piston not lining
up with the cylinder deck. The kit includes the following parts:


? 51mm Crankshaft with NTN bearings
? Crankcase and clutch cover gaskets
? Head gasket kit

This kit requires engine disassembly and therefore, we
highly recommend a professional technician install this kit. If you plan on
doing it yourself, you will need to have a Clymer or Honda shop manual.
Instructions do not come with the kits but the installation of the crankshaft is
just like installing a stock Honda crankshaft. You should also have the following
parts:

? High volume oil pump
? Oil Cooler
? CR8HSA spark plug (not required, but recommended)
? If you purchased one of our Manual Clutch Kits prior to
6/30/05, will recommend purchasing the Upgrade Disk Kit that we have available. Additionally, we
do not recommend the use of an inner rotor kit with this clutch (on a 108cc or
larger engine) as it can lead to premature clutch failure due to extra fatigue
placed on the
clutch housing. However, we offer an upgrade which allows use of inner rotor
kits and larger displacement engines ? Please see the Billet Housing upgrade
we have available. Also, do not
tighten the clutch nut with a hammer and screw driver ? it must be torqued on!

TBW0953  LIST:$179.99 MXP:$167.00

 
Manual Clutch Kit

HONDA XR / CRF50 88-20
 

? Converts 3-speed
semi-auto clutch to a 3-speed manual clutch.
? Unlike other similar kits on the market, this kit includes a 3 plate clutch and is not made in China or pulled from some Chinese engine..
? 67/18 Primary gears that makes first gear more useable than stock gears
(some other kits do not include this nice option). 
? Can properly handle
88cc ? 108cc Bore/Race Head kit combinations without clutch slippage and loss of power.
? Correct length shift shaft for the newer Honda engines so no
additional modifications are necessary.
? Comes with everything pictured including an allen head bolt kit for the engine
cases. All you will need is a perch and lever and a few of your stock parts (we
did not include a perch/ lever due to the wide variety of styles out there ?
However, we do have a nice set listed in this section if needed). Additionally,
if you don?t have a clutch nut socket, you will need one of those ? do not
tighten the nut with a hammer and screw driver ? it must be torqued on
?  Very nice option to use with the 88cc ? 108cc bore kits for even more fun and
performance!
? With the 108cc stroker engines, we do not recommend the use of an inner rotor
kit with this clutch as it can cause damage to the clutch housing. 
However, we offer an upgrade which allows use of inner rotor kits and larger displacement
engines with this clutch kit ? Please see the Billet Housing upgrade available
in this section for more details.

TBW9109 LIST:$724.99 MXP:$689.00

 TB V2 108cc Stroker Big Bore Kit ? Honda 50cc & 70cc 1988+


TBparts 108cc Race Head V2 Kit , 52mm Bore Kit, & 51mm Stroker Crank. Converts the following stock models to 108cc: 1988 and newer Honda Z50, CT70, XR50, XR70, CRF50, & CRF70

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 with the 51mm stroker crank that brings up the bore to 108cc and makes for a strong power band. Finish it off with Mikuni?s VM26 carb in our carb kit 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)
51mm TB Stroker crank making this kit 108cc
52mm Top End Gasket, clutch cover, and center case 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

TBW9118 LIST:$889.99 MXP:$825.00
 
FREE SHIPPING IN THE STATES ONLY!!!  

 
TB 108cc Stroker Big Bore kit, Race Head V2 Kit , & Mikuni VM26 Carb Kit 
Honda 50cc & 70cc 1988+

TBparts 108cc Race Head V2 Kit , 52mm Bore Kit, Mikuni VM26 Carb/Kit, & Stroker Crank.

Converts the following stock models to 108cc: 1988 and newer Honda Z50, CT70, XR50, XR70, CRF50, & CRF70

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 with the 51mm stroker crank that brings up the bore to 108cc and makes for a strong power band.

Finish it off with Mikuni?s VM26 carb in our carb kit 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 and sprocket
52mm Aluminum Steel Sleeve Cylinder
52mm High Compression Light Weight Piston Kit (91+ octane pump fuel friendly)
51mm TB Stroker crank making this kit 108cc
52mm Top End Gasket, clutch cover, and center case gasket
Mikuni VM26 Carb Kit for proven performance, Ported Manifold, gaskets, hardware, and throttle cable
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

TBW9115  LIST:$754.99 MXP:$710.00
 
FREE SHIPPING IN THE STATES ONLY!!!

 
TB V2 88cc Big Bore Kit & Mikuni VM26 Carb/Kit ? Honda 50cc & 70cc 1982+
TB 88cc Race Head V2 Kit , 52mm Bore Kit, & Mikuni VM26 Carb/Kit.

Converts the following stock models to 88cc: 1982 and newer Honda Z50, CT70, XR50, XR70, CRF50, & CRF70.

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.

Finish it off with Mikuni?s VM26 carb in our carb kit 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 and sprocket
52mm Aluminum Steel Sleeve Cylinder
52mm High Compression Light Weight Piston Kit (91+ octane pump fuel friendly)
52mm Top End Gasket, clutch cover, and center case gasket
Mikuni VM26 Carb Kit for proven performance, Ported manifold, gaskets, hardware, and throttle cable
High Volume oil pump
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

1982 and newer Honda Z50, CT70, XR50, XR70, CRF50, & CRF70

LIST:$369.99 MXP:$345.00

FREE SHIPPING IN THE STATES ONLY!!!

P#240-HXR-5031  Exhaust System - D3, Silver / XR/CRF50, 01-Present

D3 Exhaust System - XR/CRF50

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 D3, 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

FREE SHIPPING IN THE STATES ONLY!!!

411-HXR-5500 LIST:$219.95 MXP:$205.00

Bore Kit - 88cc W/Cam / XR/CRF50, 00-Present

Impressive Power. Engineered and developed by BBR. This cylinder retains skid plate mounts and includes: BBR aluminum cylinder, piston kit, exclusive BBR motocross-grind camshaft and gasket kit. Easy bolt-on instructions included. The most reliable kit available. Runs great with stock carb or bolt on BBR's 18mm carb kit.

Also fits 1988-1999 Z50R with short piston.

Cylinder retains skid plate mounts
BBR aluminum cylinder
52mm piston specially designed to work with your stock cylinder head's combustion chamber
MX-grind camshaft
Gasket kit
Easy bolt-on instructions included

Installation Note: This kit will not work with the Honda XR/CRF70 or other big port cylinder heads. It is designed for the tiny combustion chamber of the OEM Honda XR/CRF50 cylinder head. The flat top piston dome will result in an extremely low compression ratio when combined with the XR/CRF70 type cylinder head. The result is a motor that makes less horsepower than stock.

 FREE SHIPPING IN THE STATES ONLY!!!

411-HXR-5400 LIST:$369.95 MXP:$335.00

Bore Kit - 88cc FTP W/Cam, XR/CRF50, 00-Present
Convert your CRF/XR50 to an 88cc screamer with this complete kit.
Everything is included to upgrade the performance of you mini-bike.
This kit uses your stock CRF/XR50 cylinder head.
? Aluminum BBR cylinder.
? Special 52mm piston specially designed to work with your stock cylinder head's combustion chamber.
? BBR special grind camshaft take full advantage of the large piston for great performance.
? Special BBR tapered aluminum intake manifold adapts the large carb to the stock intake port size.
? 18mm carb includes extra main and pilot jets for easy tuning
? Also includes CR style throttle, cable, air filter and top end gasket kit.
? Installation available for $200 (plus shipping)

Note: This kit will not work with the Honda XR/CRF70 or other big port cylinder heads.

 

FREE SHIPPING IN THE STATES ONLY!!!

411-HXR-7001 LIST:$199.95 MXP:$190.00

Bore Kit - 88cc XR/CRF70, 97-12

Engineered and developed by BBR.
This cylinder retains skid plate mounts and includes:
BBR aluminum cylinder, piston kit, and gaskets.
Custom piston designed specifically for the OEM Honda XR/CRF70 cylinder head .
The most reliable kit available. Runs great with stock carb or bolt on BBR's 18mm carb kit.

Cylinder retains skid plate mounts
BBR aluminum cylinder
52mm piston specially designed to work with your stock cylinder head's combustion chamber
Gasket kit

Note:. Do not use this bore kit with the OEM Honda XR/CRF50 cylinder head
This piston dome is too tall and will hit causing damage to your engine. Use our bore kit intended for that cylinder head:

LIST:$229.95 MXP:$199.00

P# 510-HXR-5011 Handlebar Kit - w/Tripleclamp, BLACK / XR/CRF 50, 00-Present

CRF/XR50 Handlebar kit

The first step to upgrading your pit bike.
The most complete bar kit on the market includes everything you need.
Complete kit includes 8" rise bars that are perfect for adult riders.

Black or Red anodized, CNC machined, billet aluminum top clamp
Chromoly 8" rise handlebar
Front brake lever with long cable
Standard turn throttle with long cable and custom carb top (stock carb)
CR type kill button with long length wires
BBR crossbar pad and BBR grips
Grip glue, instructions, and 6mm hex key wrench included
Fits Z50R with BBR Z50R Tripleclamp Conversion Plate


Note: This conversion changes the OEM Honda XR/CRF50 handlebars from 3/4" diameter to standard motorcycle/bicycle 7/8".
This throttle, cable, and carb top are a special design to work with the super short slide of the OEM Keihin 13mm carb.
If you have a larger aftermarket carb you will need a different throttle and cable (consider our carb kit throttle and cable).
The throttle, cable, and carb top SHOULD fit the 1979-1999 Honda Z50R OEM carb - but you will have to figure out how to change the Z50R handlebars to 7/8" diameter.
The tripleclamp in this handlebar kit does not fit the Z50R but BBR now has a top plate (click here) to adapt this to your bike.
If you have a Chinese knock-off, of the Honda CRF50 or the Z50R, you are on your own. Most likely, none of this stuff will fit.

 

LIST:$229.95 MXP:$199.00

P# 510-HXR-5041 Handlebar Kit - w/Tripleclamp, RED / XR/CRF 50, 00-Present

CRF/XR50 Handlebar kit

The first step to upgrading your pit bike.
The most complete bar kit on the market includes everything you need.
Complete kit includes 8" rise bars that are perfect for adult riders.

Black or Red anodized, CNC machined, billet aluminum top clamp
Chromoly 8" rise handlebar
Front brake lever with long cable
Standard turn throttle with long cable and custom carb top (stock carb)
CR type kill button with long length wires
BBR crossbar pad and BBR grips
Grip glue, instructions, and 6mm hex key wrench included
Fits Z50R with BBR Z50R Tripleclamp Conversion Plate


Note: This conversion changes the OEM Honda XR/CRF50 handlebars from 3/4" diameter to standard motorcycle/bicycle 7/8".
This throttle, cable, and carb top are a special design to work with the super short slide of the OEM Keihin 13mm carb.
If you have a larger aftermarket carb you will need a different throttle and cable (consider our carb kit throttle and cable).
The throttle, cable, and carb top SHOULD fit the 1979-1999 Honda Z50R OEM carb - but you will have to figure out how to change the Z50R handlebars to 7/8" diameter.
The tripleclamp in this handlebar kit does not fit the Z50R but BBR now has a top plate (click here) to adapt this to your bike.
If you have a Chinese knock-off, of the Honda CRF50 or the Z50R, you are on your own. Most likely, none of this stuff will fit.

 

IN STOCK

330-HXR-5131 LIST:$519.95 MXP:$485.00


Swingarm - Super Stock +2.25", Silver / XR/CRF50, 00-Present
BBR's Super Stock Swingarm is burly enough to handle today's pit bike racer.
Constructed of heat treated 6061 T6 aluminum with billet drop-outs and shock mount. It is lengthened 2 1/4".
Includes stainless steel bushings and needle bearings.

Accepts 12" rear wheel.
• 6061 T6 Aluminum
• Tig welded construction
• 2 1/4 longer than stock
• Needle bearing pivots
• Fits 10" or 12" rear wheel
NOW!!! Includes chain guide