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Seatpost Clamps
Weight unit
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Manufacturer
Model
Year  
Comments
?
?
?
43.5 g
 
Carbon Clamp
2003
31.8 mm
7 g
7 g
±0,00%
incl. M5 Titanium bolt
Carbon Clamp
2003
34.9 mm
8 g
8.7 g
+8,75%
incl. M5 Titanium bolt
The Strangler
2003
34.9 mm
22 g
bolt-on
Seat Clamp for Fisher
2006
36.4 mm
22.7 g
Part No. 992551, bolt-type, silver
XXX Lite
2005
34.9 mm
26 g
26 g
±0,00%
 
Asymetric
2004
28.6 mm(?)
21 g
22 g
+4,76%
black, incl. w/ Record carbon seatposts
Asymmetric
2009
?
25 g
34.9 mm diameter for 31.6 mm seatpost
Binder Bolt
2000
?
10 g
Steel bolt for integrated seatclamps
OEM on R2000
2003
31.8 mm
23.3 g
steel bolt-on clamp
CODA
OEM
1992
27.2 mm
45 g
QR
Asso OEM
2003
31.8 mm
24 g
came on Asso frameset
?
?
?
12 g
QR bolt Ti
Scape
2002
34.9 mm
48 g
bolt on
DKG
?
2000
34.9 mm
23 g
 
The Clamp
2000
31.8 mm
14 g
 
The Clamp
2001
34.9 mm
12 g
13 g
+8,33%
 
The Clamp
2002
34.9 mm
12 g
14 g
+16,67%
 
The Clamp
2003
31.8 mm
12 g
13.6 g
+13,33%
3.2 g steel bolt + 10.4 g Al clamp
The Clamp
2004
34.9 mm
12 g
14 g
+16,67%
 
UltraClamp
2002
34.9 mm
9 g
12 g
+33,33%
averaged (12/12)
UltraClamp
2003
31.8 mm
9 g
12 g
+33,33%
2 samples weighed, both 12 g
UltraClamp
2003
34.9 mm
9 g
13 g
+44,44%
 
UltraClamp
2004
34.9 mm
9 g
12 g
+33,33%
black anodized
Farwell
Ti clamp
?
31 - 32 ID
20 g
 
OEM (Supercaliber)
2001
34.9 mm
31 g
w/ M6 steel bolt, black anodized
OEM QR seatpost clamp
2003
36.4 mm
46 g
noname
(OEM)
?
?
29 g
 
from TCR ONCE Carbon
2003
?
20 g
incl. CrMo bolt, engraved ONCE logos
OEM from ATX series
1999
34.9 mm
27 g
bolt type
OEM from XTC Composite
2005
34.0 mm
27 g
incl. 2 steel bolts (stock)
OEM from XTC Napa
2001
34.9 mm
31 g
bolt type
OEM from XTC series
2003
34.9 mm
29 g
bolt type
Titan
2001
24-30 mm
20 g
5 mm QR, not suitable for high force
QR Seatpost Clamp
2003
31.8 mm
52 g
49 g
−5,77%
 
QR Seatpost Clamp
2006
31.8 mm
53 g
 
QR Seatpost Clamp
2006
34.9 mm
52 g
 
Seatpost Clamp
2003
31.8 mm
19 g
19.5 g
+2,63%
bolt clamp, averaged (19/20)
Seatpost Clamp
2003
36.4 mm
19 g
21 g
+10,53%
bolt clamp
Seatpost Clamp
2004
34.9 mm
19 g
20 g
+5,26%
bolt clamp
Mojo SL
2007
31.6 mm
17 g
w/ Ti bolt
IKE
stock on Carrera LRS3
2003
?
61 g
34.9, QR
?
?
34.9 mm
67 g
 
?
2003
34.9 mm
22 g
bolted collar
OEM QR from Adroit Race
1999
36.4mm
48.5 g
black, '2E' on lever
Stainless Steel
2003
31.8 mm
36 g
w/ stainless steel bolt
m2racer
Post Clamp
2005
31.8 mm
8 g
8.5 g
+6,25%
 
Compact-Clamp
2000
34.9 mm
50 g
47 g
−6,00%
QR
Tec-Clamp
2002
31.6 mm
23 g
bolt
Tec-Clamp
2003
31.8 mm
17 g
16 g
−5,88%
CNC-machined, incl. bolt
Tec-Clamp
2003
34.9 mm
23 g
CNC-machined from 7075 T6 Aluminium, incl. bolt, averaged (23/23)
Tec-Clamp
2008
31.8 mm
17 g
19 g
+11,76%
CNC-machined, incl. bolt, black
NOX cycles
Racepin
2008
34.9 mm
20 g
20 g
±0,00%
 
PMP
COL 34,9
2004
34.9 mm
23 g
CNC 7075 T6 clamp with Titanium bolt
Seatclamp
2003
31.8 mm
19 g
bolt type
Promax
MX-36RT
2007
31.8 mm
18 g
23 g
+27,78%
cold forged alloy clamp for road bikes, anti-rusted steel bolt & nut, black
SEAT CLAMP CLOSE 1
2005
34.9 mm
26 g
25 g
−3,85%
bolt-type, polished
Red Bull
OEM from Scandium Four (tuned)
2003
31.8 mm
11 g
tuned with M6 Magnesium screw
Fliplock
2001
34.9 mm
44 g
QR
Fliplock
2003
30.0 mm
44 g
QR
Fliplock
2003
31.8 mm
42 g
QR
Fliplock
2005
36.4 mm
44 g
44 g
±0,00%
QR
Fliplock
2007
32.0 mm
44 g
44 g
±0,00%
QR
Liplock
2002
34.9 mm
28 g
bolt type
Liplock
2004
28.6 mm
34 g
bolt type (stock bolt weighs 7 g)
Liplock
2004
36.4 mm
40 g
bolt type
Liplock
2007
28.6 mm
34 g
32 g
−5,88%
bolt type
Alloy Oversized
2006
38.0 mm
15 g
stock on '06 Scott Scale 20
OEM from C1 Team Issue
2003
34.9 mm
16 g
bolt-on (steel bolt)
OEM from CR1 Team Issue (tuned)
2004
34.9 mm
12 g
bolt-on, tuned w/ Ti bolt , 16 g w/ stock steel bolt
OEM on Yecora
2005
?
38 g
QR seatpost clamp
OEM on Ottrott
2003
?
25 g
w/ Hex bolt
FSR Pro
2000
30.9 mm
50 g
QR OEM
OEM from Epic S-Works
2003
34.9 mm
52 g
QR
OEM from Epic S-Works
2004
?
43 g
34.9mm, QR
OEM from S-Works Tarmac SL3
2011
32.6 mm
17 g
Silver Bolt. Marked 11A2
Titanium Seat Collar
2006
31.8 mm
23 g
3/2.5 Titanium with 5 mm Ti bolt
SC-E104
2010
34.9 mm
27 g
29 g
+7,41%
bolt type
Mountain
2001
28.6 mm
52 g
QR, silver
AC9
?
?
20 g
21 g
+5,00%
bolt & lever, averaged (20/22)
Würger
2003
31.8 mm
30 g
 
Würger
2003
34.9 mm
32 g
 
Würger
2005
31.8 mm
30 g
31 g
+3,33%
red
Death Grip SL Ti
2008
31.8 mm
9.5 g
10.7 g
+12,63%
bolt-on
Death Grip SL Ti
2009
34.9 mm
9.5 g
11.06 g
+16,42%
bolt-on
Deathgrip
2004
29.8 mm
24 g
23.9 g
−0,42%
bolt-on
ZZYZX
?
?
?
47 g
same as Corratec
you lookin' at me?!
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