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400EX STOCK SPECIFICATIONS:
85mm BORE X
70mm STROKE
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BORE
KIT 415cc
87mm forged piston, 10.8:1 compression
A great option for
fast-revving power. Better throttle response, more torque and horsepower
INCLUDES: Piston, pin, rings,
circlips, headgasket, basegasket
REQUIRES: Boring, rejetting.
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00308 H BORE KIT 415CC -- $230.00
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BORE
KIT 440cc
89mm
Forged Piston, 11.2:1 Compression
Perfect for riders looking
for additional torque and smooth power delivery. Smooth torque, great
for tight woods riding.
INCLUDES: Sleeve, piston,
pin, rings, circlips, headgasket, basegasket
REQUIRES: Re-sleeving of your
cylinder, rejetting.
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00314HC H BORE KIT 440CC -- $305.00
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OVERSIZE FOR 440cc BORE KIT +.020”
89.5mm Forged Piston, 11.2:1
Compression
Oversize for
our 440cc bore kit listed above.
INCLUDES:
Piston, pin, rings, circlips, headgasket, basegasket
REQUIRES:
Must use oversize sleeve provided with any aftermarket 440cc kit.
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00314HC-B H BORE KIT 440CC +020 -- $220.00
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BORE KIT 87mm SHORT DECK HEIGHT FOR 4mm
STROKE
87mm Piston, 11.5:1 Compression
Works with
any +4mm stroked crank and standard-length rod (piston is 2mm shorter
pin-to-deck). Skirted for crank and balancer clearance. This is
the piston we sell with our regular 440cc Bore & Stroke combo.
You can use it as a replacement for that kit, or with other
aftermarket +4mm stroker cranks.
INCLUDES: Piston, pin, rings,
circlips, headgasket, basegasket
REQUIRES: +4mm
Stroked Crank (not included), Boring, rejetting.
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00302S H 87mm BORE FOR 4mm STROKE -- $272.00
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4.0mm STROKER WITH POWROLL ‘TOUGH ROD’
- SHORTER ROD - USE ANY 400EX PISTON!
425cc with stock piston, 440cc with 87mm piston, 460cc with 89mm piston
PISTON KIT NOT INCLUDED WITH THIS STROKER - WILL WORK WITH ANY
(MODIFIED) 400EX PISTON KIT
This stroker utilizes our
super-strong ‘Tough Rod’ (with your stock pin and needle assembly).
The shorter rod allows you to
utilize any 400EX piston kit (piston skirt may need to be shortened) and
does not require any case or gear modifications.
INCLUDES: New Powroll Tough
Rod. Stroke work done on your crank.
REQUIRES:
Your crank pin and needle assembly must be good.
Non-Powroll pistons will need modification to skirt.
Send in your crank for modification. Download our
Stroker Booklet
for details.
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16092R H STROKE 400EX W TOUGH ROD -- $545.00
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440cc BORE & STROKE COMBINATION
87mm
BORE, +4mm STROKE, 11.5:1 COMPRESSION
This kit provides great
overall power increases, with excellent torque and strong pull
throughout the power range and very quick rev. Re-uses your stock
rod assembly, so your rod must be good.
INCLUDES: 87mm Bore-In Piston
Kit: Piston, pin, rings, circlips, headgasket, basegasket. 4.0mm Stroke,
work done on your crank.
REQUIRES: Cylinder boring.
Rejetting.
Send in your crank for modification. Download our
Stroker Booklet
for details.
Note: Powroll will not install aftermarket rods (other than our
Tough Rod shown above) on 400EX cranks - your crank must have a good
stock rod assembly (rod, needle assembly and crank pin). Rod components are not available from Honda (only
complete crank assemblies).
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00302S-16099LR H BORE-STROKE COMBO 440CC -- $522.00
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RACE GRIND CAMSHAFT
HARDWELD
CAM, INCLUDES
CORE CHARGE
Lift .350” Intake and .345” Exhaust
Excellent mid to top end increase when used with any of our bore kits
or bore and stroke combinations.
This cam has a noticeable increase in top-end power when used with a
440cc or larger displacement engine.
REQUIRES:
Send in your
good cam core for refund. Hardfaced rockers. High Performance
valve springs.
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12745-22745G H CAM 400EX (Price incl.
core crg of $170.00) -- $350.00
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HARDFACED ROCKERS
HARDWELD
, INCLUDES
CORE CHARGE
Highly recommend with any aftermarket camshaft.
REQUIRES:
Send in your good rockers
for refund.
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23001-23001G H HF ROCKERS
(Price incl. core crg of $140.00) --
$420.00
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VALVE SPRINGS
Recommended for use with all
high-lift 400EX camshafts.
INCLUDES: Stronger inner and
outer springs. Titanium Retainers.
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24035 H VALVE SPRINGS 400EX -- $120.00
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STAINLESS STEEL VALVES
Increased
longevity and better airflow characteristics make these a much better
deal than OEM replacements.
Valves are sold each.
Purchase 2 Intake Valves and 2 Exhaust Valves for a complete set of 4. |
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39mm
KEIHIN FCR CARB - SPECIAL POWROLL SETUP
This
flat-slide pumper carb works exceptionally well throughout the rpm range
of the engine, from just off idle to screaming at peak horsepower. With
unbelievably crisp throttle response, there’s no other carb that can
duplicate it’s performance in a four-stroke (that’s why they come stock
on modern four-stroke race bikes and quads.
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WHY PURCHASE YOUR FCR
CARB FROM POWROLL?
The complex design of
the FCR makes setup very important. Every FCR carburetor that Powroll
sells goes through a 30-point inspection. Jetting is set for the
application, the pump stroke is calibrated; almost an hour of work goes
into each of our FCR carbs. You also receive our FCR carb tuning
booklet. All this adds up to a carburetor that is truly a ‘bolt on and
ride’ setup!
WILL YOU TUNE MY FCR
CARB I PURCHASED FROM ANOTHER SOURCE?
Due to the huge variety
of possible setups for this carb, we are not able to offer this service.
It is very important to purchase your FCR carburetor from a reliable
source - the best option is to purchase your carb kit from the same
company that built your other performance parts. If you are
shopping ebay to try and save a few dollars on performance goodies, buy
your shiny billet bits, your exhaust system, almost anything else there -- but
get your carb from a reliable source -- you'll save money, time and
headaches. |
Kit Includes: Prejetted
Keihin 49mm Carb with airboot adaptor to work with your stock airbox,
custom single throttle cable for use with thumb throttle, additional
main jet sizes, installation and jetting instruction booklet.
Recommended For:
Racing and dune engines 415cc and larger.
Trail engines 440cc and larger.
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20530 H CARB KIT FCR 400EX -- $600.00
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HOP
UP TRICK!
Many
aftermarket CDI boxes on the market today are actually stock Honda
XR250R boxes! The unmodified XR250 box will give you about 800
more rpm on top and a faster ignition curve. You can purchase this
directly from your local Honda dealer and save money.
Order:
CDI for Honda XR 250 1992-2004 Part #30410-KCE-671
Want the best price? Order from
Service Honda! |
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