【SIP BFA】Clutch SIP Race BFA 2.0 24／64 teeth for primary 63／64 teeth for BFA 225-306 engine

24/64 teeth
straight teeth
for primary 63/64 teeth
5 clutch friction plates
Aluminum basket
4 clutch plain plates，th 2mm
6-12 spring(s)
with primary gear，straight cogs
flange with gear teeth
TUNING RACE - for professionals

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High-tech Clutch for Vespa Largeframe Models with improved operating principle and power transmission.
The SIP-BFA Clutch was developed for extreme loads.
The first version was conceived by BFA for the 306 Engine.
There it usually has to reliably transmit power of around 50 hp.
However，the SIP-BFA 2.0 version has also been successfully tested with outputs of over 80 hp.
Low mass on the Crankshaft
5 Clutch Friction Plates
with toothed Flange
The operating principle of the Vespa Largeframe Clutch has been reversed.
This is intended to connect less mass rigidly to the Crankshaft and has the effect of improving operability.
The design of the clutch In order to reverse the operating principle of the clutch，some design work was necessary.
BFA has manufactured its own primary pinion for this clutch.
This not only ensures a solid and robust solution，but the flat design of the Drive Sprocket also saves installation space.
A decisive prerequisite for accommodating 5 facing plates in the clutch.
The Clutch Pinion is connected to the CNC-milled outer basket via 12 Screws.
There is a Needle Bearing between the inner and outer basket instead of the original bronze bushing.
The clutch is actuated by a ball-bearing Pressure Plate.
Similar to a Vespa Smallframe Clutch，there are 6 Springs in the lowest Plate，which can be supplemented by 6 small Springs placed in the middle.
A straight-toothed primary transmission is included in the scope of delivery.
Also two Screws that can be used to compress the Clutch and allow the pads to be changed when installed.
The set also includes two rings that can be used to distance the Pressure Plate from the Clutch Cover to the correct height.
The whole thing fits under the original Clutch Cover of the PX 200 (occasionally some reworking is required).
Parts from the Vespa Smallframe Models are used as linings.
The separating disks are made of steel.
However，we also offer aluminum discs as replacement parts.
The SIP-BFA 2.0 is a slight update of the BFA Clutch.
Tolerances have been reduced，wall thicknesses increased and the outer basket now comes in two versions.
The aluminum version of the outer basket comes with a surface finish to ensure greater resistance to the lugs of the Clutch Friction Plates.
The steel version of the basket is even more robust，but not quite as sporty due to its higher weight.
The Clutch’s Flange is toothed to form an indestructible connection with the Crankshaft.
However，this requires the use of a Crankshaft with the same splines.
These are available for the BFA Crankcase as well as for original Vespa Crankcases.
Conclusion：The Clutch for the Vespa Largeframe Models from BFA is the absolute high-end solution for a clean，reliable and easy-to-use power connection between the Engine and gearbox.
Technical details at a glance：
CNC milled outer basket
12-way Fitting with primary pinion
CNC milled steel inner basket with anti-rotation lock for Cluster Circlip
Needle Bearing between inner and outer basket
5 pads from Vespa SF Clutch
Pressure Plate Clutch
CNC milled aluminum Cover Plate top and bottom
12 Springs/ 6 inner/ 6 outer
incl.
straight-toothed primary 24/64
Clutch Friction Plates can be changed while installed
can be fitted with the original 200 Clutch Cover
The best setup - our SIP-TIP：
Crankshaft with splined connection to the clutch flange.
For perfect metering，we recommend the SIP Performance clutch cable (item no.
94180440).
BFA recommends 10W 30 Oil：Art.
no.
M7614052
The CRIMAZ “Rallino” also makes it easier to operate the Clutch：Art.
no.
87724000
Feedback from the scene - Jesco，SIP team，Tacho-Karacho Race 2018：”The Clutch works absolutely perfectly.
When pulled，you no longer feel any reaction on the rear wheel.
It can be engaged very sensitively and also transmits very high forces without any problems.
“

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