2025 Demon Tweeks Motorsport E-Catalogue - Catalog - Page 389
Rate
High specification race or rally suspension
springs produced in high grade alloy steel,
shot-blasted for maximum life and etched
with numbers indicating length in inches
and rates in lbs per inch of compression.
FAULKNER’S
RACE SPRINGS
Many more springs available,
please call or go online
PRICES ARE EACH
• BLACK STANDARD COLOUR
CO M PE TITI O N SPRI N GS
Length
6”
7”
8”
9”
10”
11”
12”
lbs/ins N/mm 152.4mm 177.8mm 203.2mm 228.6mm 254mm 279.4mm 304.8mm
80
14.03
£31.00 £32.50
£34.50
£37.00 £38.50
£39.50
£39.90
100
17.54
£31.00 £32.50
£34.50
£37.00 £38.50
£39.50
£39.90
125
21.92
£31.00 £32.50
£34.50
£37.00 £38.50
£39.50
£39.90
150
26.31
£31.00 £32.50
£34.50
£37.00 £38.50
£39.50
£39.90
175
30.8
£31.00 £32.50
£34.50
£37.00 £38.50
£39.50
£39.90
200
35.08
£31.00 £32.50
£34.50
£37.00 £38.50
£39.50
£39.90
225
39.47
£31.00 £32.50
£34.50
£37.00 £38.50
£39.50
£39.90
250
43.85
£31.00 £32.50
£34.50
£37.00 £38.50
£39.50
£39.90
275
48.24
£31.00 £32.50
£34.50
£37.00 £38.50
£39.50
£39.90
300
52.63
£31.00 £32.50
£34.50
£37.00 £38.50
£39.50
£39.90
325
57.01
£31.00 £32.50
£34.50
£37.00 £38.50
£39.50
£39.90
350
61.4
£31.00 £32.50
£34.50
£37.00 £38.50
£39.50
£39.90
375
65.78
£31.00 £32.50
£34.50
£37.00 £38.50
£39.50
£39.90
400
70.17
£31.00 £32.50
£34.50
£37.00 £38.50
£39.50
£39.90
Huge range of springs available - please call if your size is not listed.
2”/51mm Internal Diameter
Rate
lbs/ins
200
250
300
350
400
450
500
550
600
650
700
N/mm
35.08
43.85
52.63
61.4
70.17
78.94
87.71
96.49
105.26
114.03
122.8
Length
5”/127mm
£46.80
£46.80
£46.80
£46.80
£46.80
£46.80
£46.80
£46.80
£46.80
£46.80
£46.80
Rate
lbs/ins
750
800
850
900
950
1000
1100
1200
1300
1400
1500
N/mm
131.57
140.35
149.12
157.89
166.66
175.43
192.98
210.52
228.07
245.61
263.15
Length
5”/127mm
£46.80
£46.80
£46.80
£46.80
£46.80
£49.90
£49.90
£49.90
£49.90
£49.90
£49.90
Huge range of springs available - please call if your size is not listed.
2.5”/65mm Internal Diameter
Length
6”
7”
8”
9”
10.5”
12”
14”
lbs/ins N/mm 152.4mm 177.8mm 203.2mm 228.6mm 266.7mm 304.8mm 355.6mm
200
35.08
£41.90
£43.90
£44.40
£45.20
£47.20
£49.20
£59.80
225
39.47
£41.90
£43.90
£44.40
£45.20
£47.20
£49.20
250
43.85
£41.90
£43.90
£44.40
£45.20
£47.20
£49.20
£59.80
275
28.24
£41.90
£43.90
£44.40
£45.20
£47.20
300
52.63
£41.90
£43.90
£44.40
£45.20
£47.20
£49.20
£59.80
325
57.01
£41.90
£43.90
£44.40
£45.20
£47.20
350
61.4
£41.90
£43.90
£44.40
£45.20
£47.20
£49.20
£59.80
375
65.78
£41.90
£43.90
£44.40
£45.20
400
70.17
£48.80
£49.90
£50.40
£50.50
£47.20
£49.20
£69.90
425
74.76
£48.80
£49.90
£50.40
£50.50
450
78.94
£48.80
£49.90
£50.40
£50.50
£53.50
£69.90
475
83.33
£48.80
£49.90
£50.40
£50.50
500
87.71
£48.80
£49.90
£50.40
£50.50
£53.50
550
96.49
£48.80
£49.90
£50.40
£53.50
600
105.26
£48.80
£49.90
£50.40
£53.50
650
114.03
£48.80
£49.90
£50.40
700
122.8
£52.10
£52.90
£53.40
750
131.57
£52.10
£52.90
£53.40
800
140.35
£52.10
£52.90
£53.40
Huge range of springs available - please call if your size is not listed.
Springs can now be supplied with a computer read out,
showing load in lbs, kgs or Newtons and displacement in ins or mm
at an extra cost of just £3.75 per spring
FLAT SECTION HELPER SPRINGS
2.25”/58.5mm Internal Diameter
N/mm
0.7
7.01
10.52
17.54
26.31
35.08
43.85
52.63
61.40
70.17
78.94
£18.50
£41.00
£41.00
£41.00
£41.00
£41.00
£41.00
£45.50
£45.50
£45.50
£45.50
4” Long
lbs/ins
4
30
40
50
75
100
125
150
200
230
N/mm
0.7
5.26
7.01
8.77
13.15
15.78
21.92
26.31
35.08
40.35
£20.50
£42.50
£42.50
£42.50
£42.50
£42.50
£47.00
£47.00
£47.00
£47.00
Huge range available - please call if your size is not listed.
2.5”/65mm Internal Diameter
2” Long
lbs/ins
4
45
60
80
110
150
210
280
N/mm
0.7
7.89
10.52
14.03
19.29
26.31
34.84
49.12
£18.50
£41.00
£41.00
£41.00
£41.00
£41.00
£41.00
£45.50
4” Long
lbs/ins
4
40
50
60
75
100
125
150
Can be supplied powder coated in different colours at an extra cost of £8.95 per spring.
2.25”/58.5mm Internal Diameter
Rate
2” Long
lbs/ins
4
40
60
100
150
200
250
300
350
400
450
N/mm
0.7
7.01
8.77
10.52
13.15
17.54
21.92
26.31
£20.50
£42.50
£42.50
£42.50
£42.50
£47.00
£47.00
£47.00
Alloy Double
Adaptor
Enables fitting of
main spring to helper
spring.
Available to suit
1.9”, 2.25” and 2.5”
internal diameter
springs. Finished in
anodised black.
1.9” Adaptor
(SEAT1.9) £23.33
2.25” Adaptor
(SEAT2.25) £23.33
2.5” Adaptor
(SEAT2.5) £23.33
Rate
lbs/ins
100
110
120
130
140
150
160
170
180
185
200
225
250
275
300
325
350
375
400
425
450
475
500
525
550
575
600
625
650
675
700
725
750
775
800
825
850
875
900
950
1000
1050
1100
1150
1200
1250
1300
1350
1400
N/mm
17.54
19.29
20.05
22.08
24.56
26.31
28.07
29.82
31.57
32.45
35.08
39.47
43.85
48.24
52.63
57.01
61.4
65.78
70.17
74.56
78.94
83.33
87.71
92.1
96.49
100.87
105.26
109.64
114.03
118.42
122.8
127.19
131.57
135.96
140.35
144.73
149.12
153.5
157.89
166.66
175.43
184.21
192.98
201.75
210.52
219.29
228.07
236.84
245.61
4”
101.6mm
£31.70
£31.70
£31.70
£31.70
£31.70
£31.70
£31.70
£31.70
£31.70
£31.70
£31.70
£31.70
£31.70
£31.70
£31.70
£31.70
£31.70
£31.70
£31.70
£34.50
£34.50
£34.50
£34.50
£34.50
£34.50
£42.30
£42.30
£42.30
£42.30
£42.30
£42.30
Length
5”
6”
7”
8”
9”
10.5”
12”
14”
127mm 152.4mm 177.8mm 203.2mm 228.6mm 266.7mm 304.8mm 355.6mm
£32.10
£32.30
£34.60
£34.80
£35.60
£36.60
£43.30
£32.10
£32.30
£34.60
£34.80
£35.60
£36.60
£31.90
£32.10
£32.30
£34.60
£34.80
£35.60
£36.60
£43.30
£31.90
£32.10
£32.30
£34.60
£34.80
£35.60
£36.60
£43.30
£32.10
£32.30
£34.60
£34.80
£35.60
£36.60
£43.30
£31.90
£32.10
£32.30
£34.60
£34.80
£35.60
£36.60
£43.30
£32.10
£32.30
£34.60
£34.80
£35.60
£36.60
£43.30
£32.10
£32.30
£34.60
£34.80
£35.60
£36.60
£43.30
£31.90
£32.10
£32.30
£34.60
£34.80
£35.60
£36.60
£43.30
£31.90
£32.10
£32.30
£34.60
£34.80
£35.60
£36.60
£43.30
£31.90
£32.10
£32.30
£34.60
£34.80
£35.60
£36.60
£43.30
£31.90
£32.10
£32.30
£34.60
£34.80
£35.60
£36.60
£43.30
£31.90
£32.10
£32.30
£34.60
£34.80
£35.60
£36.60
£43.30
£31.90
£32.10
£32.30
£34.60
£34.80
£35.60
£36.60
£43.30
£31.90
£32.10
£32.30
£34.60
£34.80
£35.60
£36.60
£43.30
£31.90
£32.10
£32.30
£34.60
£34.80
£35.60
£36.60
£43.30
£31.90
£32.10
£32.30
£34.60
£34.80
£35.60
£36.60
£43.30
£31.90
£32.10
£32.30
£34.60
£40.70
£43.40
£43.70
£47.20
£31.90
£32.10
£32.30
£34.60
£40.70
£43.40
£43.70
£47.20
£31.90
£32.10
£32.30
£34.60
£40.70
£43.40
£43.70
£47.20
£31.90
£32.10
£32.30
£34.60
£40.70
£43.40
£31.90
£32.10
£32.30
£34.60
£40.70
£43.40
£43.70
£31.90
£32.10
£32.30
£34.60
£40.70
£31.90
£32.10
£32.30
£34.60
£40.70
£43.40
£43.70
£31.90
£32.10
£32.30
£34.60
£31.90
£32.10
£32.30
£34.60
£40.70
£43.40
£43.70
£31.90
£32.10
£32.30
£34.60
£31.90
£32.10
£32.30
£34.60
£40.70
£43.40
£31.90
£32.10
£32.30
£34.70
£34.90
£38.60
£43.00
£53.30
£59.60
£34.70
£34.90
£38.60
£34.70
£34.90
£38.60
£43.00
£53.30
£59.60
£34.70
£34.90
£38.60
£34.70
£34.90
£38.60
£43.00
£53.30
£59.60
£34.70
£34.90
£38.60
£34.70
£34.90
£38.60
£43.00
£53.30
£59.60
£34.70
£34.90
£38.60
£34.70
£34.90
£38.60
£43.00
£53.30
£59.60
£34.70
£34.90
£38.60
£43.00
£53.30
£59.60
£42.50
£42.70
£46.40
£43.00
£53.30
£59.60
£42.50
£42.70
£42.50
£42.70
£46.40
£42.70
£42.50
£42.70
£46.40
£57.70
£42.70
£42.50
£42.70
£46.40
£42.70
£42.50
£42.70
£46.40
£57.70
-
Huge range of springs available - please call if your size is not listed.
Conversion Chart
inches to mm
mm to inches
lbs/inches to kg/mm
Multiply inches by 25.4 = mm
Divide mm by 25.4 = inches
Divide lbs by 56 = kg/mm
kg/mm to lbs/inches Multiply kg/mm by 56 = lbs/inches
lbs/inches to N/mm
Divide lbs by 5.7 = N/mm
N/mm to lbs/inches Multiply N/mm by 5.7 = lbs/inches
C spanner spring platform adjuster available
ALL PRICES PLUS VAT
SUSPENSION •
RACE OR RALLY SUSPENSION SPRINGS
1.9”/48.5mm Internal Diameter
See page 392
• SHOP ONLINE • www.demon-tweeks.com • SALES ORDER HOTLINE • 01978 664466 •
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