Spring data:
Seat pressure - 90lbs @ 35.5mm
Open (lift) pressure - 230lbs @ 13.0mm
Spring coil bind - 21.50mm
Max lift - 14.80mm
Rate - 11.50mm
Outer spring outer diameter - 29.65mm
Outer spring inner diameter - 21.85mm
Inner spring outer diameter - 20.50mm
Inner spring inner diameter - 15.50mm

Set includes:
Double springs - 16 pcs. SPR-H1005D-S14
Titanium retainers - 16 pcs. RET-BMS14-T1
Seats - 16 pcs. SEAT-H1002-S14

The Xtreme Clutch 230mm Race Clutch is available with either ceramic, organic or carbon friction materials, making these kits ideal for high horsepower and motorsport applications where a high heat capacity is required.

The Xtreme 230mm Race Clutch is the ultimate in clutch solutions with a range like no other. The 230mm range boasts a variety of kits to suit most high horsepower applications for street, circuit, drift or race use. The Xtreme 230mm Race Clutch has been designed, allowing for endless options with clutch operation with internal hydraulic options and pull-push conversions a factoring feature in the 230mm range.

Manufacturer: ACL Bearing Company
Part number: 4B1490H-0.25
For BMW - 1.6 1.8 1.9 (M40, M42, M43, M44)

Manufacturer: ACL Bearing Company
Part number: 4B1490H-STD
For BMW - 1.6 1.8 1.9 (M40, M42, M43, M44)

Manufacturer: ACL Bearing Company
Part number: 4B1490HX-STD
For BMW - 1.6 1.8 1.9 (M40, M42, M43, M44)

ENGINE BEARINGS
	MAIN BEARING SET
	Part#
	5M1538H	5M1538HX
Sizes	STD, .025, .25, .50	STD
Oil Clearance	Standard	+ 0.001" Extra
Half Type	Upper & Lower
Material	Tri-metal
Min Std Shaft Size	2.3611in / 59.971mm
Max Std Shaft Size	2.3618in / 59.990mm
Min Std Tunnel Size	2.5591in / 65.000mm
Max Std Tunnel Size	2.5598in / 65.019mm
Max Wall at Crown	0.0980in / 2.490mm	0.0930in / 2.478mm
Max Overall Length	0.787in / 20.00mm #1,2,4,5 0.982in / 24.94mm #3 thrust
Notes
Diagram        (Top View)

Engines BMW - 1.6 1.8 1.9 (M40, M42, M43, M44)

ENGINE BEARINGS
	MAIN BEARING SET
	Part#
	5M1538H	5M1538HX
Sizes	STD, .025, .25, .50	STD
Oil Clearance	Standard	+ 0.001" Extra
Half Type	Upper & Lower
Material	Tri-metal
Min Std Shaft Size	2.3611in / 59.971mm
Max Std Shaft Size	2.3618in / 59.990mm
Min Std Tunnel Size	2.5591in / 65.000mm
Max Std Tunnel Size	2.5598in / 65.019mm
Max Wall at Crown	0.0980in / 2.490mm	0.0930in / 2.478mm
Max Overall Length	0.787in / 20.00mm #1,2,4,5 0.982in / 24.94mm #3 thrust
Notes
Diagram        (Top View)

Engines BMW - 1.6 1.8 1.9 (M40, M42, M43, M44)

ENGINE BEARINGS
	MAIN BEARING SET
	Part#
	5M1538H	5M1538HX
Sizes	STD, .025, .25, .50	STD
Oil Clearance	Standard	+ 0.001" Extra
Half Type	Upper & Lower
Material	Tri-metal
Min Std Shaft Size	2.3611in / 59.971mm
Max Std Shaft Size	2.3618in / 59.990mm
Min Std Tunnel Size	2.5591in / 65.000mm
Max Std Tunnel Size	2.5598in / 65.019mm
Max Wall at Crown	0.0980in / 2.490mm	0.0930in / 2.478mm
Max Overall Length	0.787in / 20.00mm #1,2,4,5 0.982in / 24.94mm #3 thrust
Notes
Diagram        (Top View)

Engines BMW - 1.6 1.8 1.9 (M40, M42, M43, M44)

	XP XP C4042-PR C4042-PR
Quantity	4
Crankshaft	44.991 / 44.973
Housing	48.001 / 48.016
Max Wall	1.491
Max Length	18.001

Engines: BMW - 1.6 1.8 1.9 2.0
(M40B16, M40B18, M42B18, M43B16, M43B18, M43B19, M44B19)

	XP XP F7016U-PR F7039L-PR	XP XP M7016U-PR M5578L-PR
Quantity	1	4
Crankshaft	59.990 / 59.972	59.990 / 59.972
Housing	65.001 / 65.019	65.001 / 65.019
Max Wall	2.494	2.494
Max Length	25.039	19.969

Engines: BMW - 1.6 1.8 1.9 2.0
(M40B16, M40B18, M42B18, M43B16, M43B18, M43B19, M44B19)

Ferrea Competition Plus Valves have built a reputation as the industry's most reliable extreme duty valve. To manufacture the valves we use special aerospace quality alloys, including the EV8-Z18, which provides high tensile strength. An exclusive two-step slow forging process ensures proper grain flow and virtually eliminates any damage to thematerial structure. The valves are then heat-treated and stress-relieved over a 48-hour period, which is the crucial base of our molecular integrity. These valves feature avionics-quality hard chrome along with a specially applied hard tip.