The best lightweight aluminum flywheel on the market
now has a proper clutch to go with it. JB Racing
lightweight aluminum flywheels lower the
rotating mass of your stock flywheel, allowing your engine to rev
quicker, making shifting faster and rev-matching much easier - not
to mention dropping driveline losses. The ClutchMasters clutches
are a true performance piece with uprated clamp load and options
from performance street to racing/track ceramic to take all the
power and abuse you can throw at it.
THE FLYWHEEL
JB Racing is one of the best machine shops in
the country, used by many professional race teams to do precision
machining for engines and other driveline components. Their BMW
flywheels are made with the same precision and quality that these
teams (including the BimmerWorld World Challenge Touring Cars) rely
on, unlike typical units on the market. Standard features
include:
-
CNC machined flywheel, zero-balanced to
eliminate vibration
-
Replaceable hardened steel clutch
surface, bolted - not riveted on
-
Heli-coil inserts for pressure plate
don't strip when clutch is replaced
-
Factory starter ring gear
-
Hardened steel gaul plate keeps the
flywheel bolts from damaging flywheel
-
Flywheel bolts, pressure plate bolts, and
dowel pins included
THE CLUTCH
We have partnered with ClutchMasters for our complete
clutch lineup and the result is what you should expect -
dependability and performance for the BMW enthusiast.
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Disc material - Depending on your car's use, we offer
five flavors for the right amount of grip:
-
ClutchMasters Stage I - Performance Organic - 40% higher
holding capacity, excellent for street and track use
-
ClutchMasters Stage II - Kevlar - 70% higher capacity,
smooth engagement, very long hard-use lifespan (2-3 times
stock)
-
ClutchMasters Stage III - Sintered Kevlar - segmented
Kevlar surface, more bite, 110% higher capacity, long
life
-
ClutchMasters Stage IV - Ceramic - hard use compound, gives
up some smoothness for additional power handling
capability
-
ClutchMasters Stage V - Ceramic Puck - road race and hard
use package, puck design for more grab and lighter
weight
-
Pressure plate - We increase the clamping force on the
pressure plate by changing the lever action, which adds a minimal
amount of pedal stiffness compared to other methods. We also
replace the straps with beefier pieces and add an additional layer
for good measure - this has proven to be the Achille's heel most
pressure plates and is a must for cars that will receive any
extended hard use.
All kits include JB Racing aluminum lightweight
flywheel, clutch disc and pressure plate of choice, and throw-out
bearing. Fits all 87-91 E30 325i cars and 89+ 325ix. Will fit
E30 318is M42 engine - requires E30 323 throwout bearing (not
included).
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Write-Up
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