Tomei

Tomei Poncam Camshafts

Tomei Poncam shafts enable greater tuning for high performance of your Japanese vehicle.

Tomei presents the popular poncams. Generally, engine tuning is to modify the torque characteristic of engine by changing cam duration timing and height of the cam lift, so as to gaining maximum torque and horse power. However, when tuning the engine strictly, it should be carried out with the idea of securing effective area of the valve not only by duration timing and height of the cam lift, but also by through improvement of its intake efficiency.

High valve lift allows huge amount of air to flow in, yet it mechanically damages the system and gains friction loss. Also, wide cam duration will deriver great power at high RPM, but it gives rough engine character at low RPM too. Tomei have worked to get an ideal well-balanced profile of camshaft and succeeded to give it 1.3 to 1.5 times more effective area than regular camshafts

Features

Tomei have been developing and producing their original camshafst ever since TOMEI established. Still today, they are providing high performance camshaft to many racing teams and winning lots of titles.

Type A
In order to get stable idle and raise low-mid RPM torque, we set the duration of EX camshaft shorter.
Best suit used with stock turbine or N1 turbine.

Type B
By giving longer duration timing than type a, it eables to raise both response and peak power at the same time, even with mid-large sized turbine.

Earn up to USD $ 16.34 in loyalty discounts on your next order.

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Vehicle Type IN Duration EX Duration IN Lift EX Lift   Price Order
143040
In stock at Tomei
180SX - RS13
SR20DE
Type N
260 degrees
260 degrees
11.2 mm
11.2 mm
USD $ 316.23
USD $ 333.57
50,055 JPY
143079
Back in stock 15 Nov 2026 at Tomei
180SX - RS13
SR20DET
Solid
260 degrees
260 degrees
11.0 mm
11.0 mm
USD $ 316.23
USD $ 333.57
50,055 JPY
143043
In stock at Tomei
180SX - RS13
SR20DET
Type R
256 degrees
256 degrees
11.5 mm
11.5 mm
USD $ 316.23
USD $ 333.57
50,055 JPY
143069
GT-R - R35
256 degrees
264 degrees
10.25 mm
10.5 mm
USD $ 843.27
USD $ 889.52
133,479 JPY
143041
In stock at Tomei
Primera - P10
SR20DE
Type N
260 degrees
260 degrees
11.2 mm
11.2 mm
USD $ 316.23
USD $ 333.57
50,055 JPY
143039
In stock at Tomei
Primera - P11
SR20DE
Type N
260 degrees
260 degrees
11.2 mm
11.2 mm
USD $ 316.23
USD $ 333.57
50,055 JPY
143040
In stock at Tomei
Silvia - S13
SR20DE
Type N
260 degrees
260 degrees
11.2 mm
11.2 mm
USD $ 316.23
USD $ 333.57
50,055 JPY
143079
Back in stock 15 Nov 2026 at Tomei
Silvia - S13
SR20DET
Solid
260 degrees
260 degrees
11.0 mm
11.0 mm
USD $ 316.23
USD $ 333.57
50,055 JPY
143043
In stock at Tomei
Silvia - S13
SR20DET
Type R
256 degrees
256 degrees
11.5 mm
11.5 mm
USD $ 316.23
USD $ 333.57
50,055 JPY
143042
In stock at Tomei
Silvia - S14
SR20DE
Type N
260 degrees
260 degrees
11.2 mm
11.2 mm
USD $ 316.23
USD $ 333.57
50,055 JPY
143080
In stock at Tomei
Silvia - S14
SR20DET
Solid
260 degrees
260 degrees
11.0 mm
11.0 mm
USD $ 316.23
USD $ 333.57
50,055 JPY
143044
In stock at Tomei
Silvia - S14
SR20DET
Type R
256 degrees
256 degrees
11.5 mm
11.5 mm
USD $ 316.23
USD $ 333.57
50,055 JPY
143042
In stock at Tomei
Silvia - S15
SR20DE
Type N
260 degrees
260 degrees
11.2 mm
11.2 mm
USD $ 316.23
USD $ 333.57
50,055 JPY
143080
In stock at Tomei
Silvia - S15
SR20DET
Solid
260 degrees
260 degrees
11.0 mm
11.0 mm
USD $ 316.23
USD $ 333.57
50,055 JPY
143044
In stock at Tomei
Silvia - S15
SR20DET
Type R
256 degrees
256 degrees
11.5 mm
11.5 mm
USD $ 316.23
USD $ 333.57
50,055 JPY
143019
In stock at Tomei
Skyline - R32 GTS-t/4 - HCR32
RB20DET
256 degrees
256 degrees
8.5 mm
8.5 mm
USD $ 500.69
USD $ 528.15
79,253 JPY
143020
In stock at Tomei
Skyline - R33 GTS-t - ECR33
Aug-1993 to Sep-1997
256 degrees
256 degrees
8.5 mm
8.5 mm
USD $ 513.87
USD $ 542.05
81,339 JPY
143050
In stock at Tomei
Skyline - R33 GTS-t - ECR33
Sep-1997+ (CAS change)
256 degrees
256 degrees
8.5 mm
8.5 mm
USD $ 513.87
USD $ 542.05
81,339 JPY
143046
In stock at Tomei
Skyline - R34 25GTT - ER34
Type A
252 degrees
252 degrees
9.15 mm
9.15 mm
USD $ 513.87
USD $ 542.05
81,339 JPY
143023
In stock at Tomei
Skyline - R34 25GTT - ER34
Type B
260 degrees
260 degrees
9.15 mm
9.15 mm
USD $ 513.87
USD $ 542.05
81,339 JPY
143036
Limited stock at Tomei
Skyline GT-R - BNR32
Type A
260 degrees
252 degrees
9.15 mm
9.15 mm
USD $ 500.69
USD $ 528.15
79,253 JPY
143005
Limited stock at Tomei
Skyline GT-R - BNR32
Type B
260 degrees
260 degrees
9.15 mm
9.15 mm
USD $ 500.69
USD $ 528.15
79,253 JPY
143051
In stock at Tomei
Skyline GT-R - BNR32
Type R
250 degrees
250 degrees
9.15 mm
9.15 mm
USD $ 500.69
USD $ 528.15
79,253 JPY
143036
Limited stock at Tomei
Skyline GT-R - BCNR33
Type A
260 degrees
252 degrees
9.15 mm
9.15 mm
USD $ 500.69
USD $ 528.15
79,253 JPY
143005
Limited stock at Tomei
Skyline GT-R - BCNR33
Type B
260 degrees
260 degrees
9.15 mm
9.15 mm
USD $ 500.69
USD $ 528.15
79,253 JPY
143051
In stock at Tomei
Skyline GT-R - BCNR33
Type R
250 degrees
250 degrees
9.15 mm
9.15 mm
USD $ 500.69
USD $ 528.15
79,253 JPY
143037
Skyline GT-R - BNR34
Type A
260 degrees
252 degrees
9.15 mm
9.15 mm
USD $ 500.69
USD $ 528.15
79,253 JPY
143018
Skyline GT-R - BNR34
Type B
260 degrees
260 degrees
9.15 mm
9.15 mm
USD $ 500.69
USD $ 528.15
79,253 JPY
143052
In stock at Tomei
Skyline GT-R - BNR34
Type R
250 degrees
250 degrees
9.15 mm
9.15 mm
USD $ 500.69
USD $ 528.15
79,253 JPY
Vehicle Type IN Duration EX Duration IN Lift EX Lift   Price Order
143082
1JZ-G(T)E
Late
Type B
260 degrees
264 degrees
8.8 mm
8.7 mm
USD $ 889.38
USD $ 938.16
140,778 JPY
143071
Limited stock at Tomei
1JZGTE
Late
Type A
250 degrees
260 degrees
8.8 mm
9.1 mm
USD $ 889.38
USD $ 938.16
140,778 JPY
143072
In stock at Tomei
2JZ-G(T)E
2JZ-GTE Early
264 degrees
264 degrees
9.5 mm
9.5 mm
USD $ 658.80
USD $ 694.94
104,280 JPY
143075
In stock at Tomei
2JZ-GTE (VVTi)
LATE
252 degrees
260 degrees
8.9 mm
9.1 mm
USD $ 790.56
USD $ 833.92
125,136 JPY
143056
In stock at Tomei
4A-G(Z)E
4 Valve
264 degrees
264 degrees
8.15 mm
8.15 mm
USD $ 592.92
USD $ 625.44
93,852 JPY
143073
4A-G(Z)E
5 Valve
264 degrees
256 degrees
9.0 mm
9.0 mm
USD $ 592.92
USD $ 625.44
93,852 JPY
143056
In stock at Tomei
4A-GE
4 Valve
264 degrees
264 degrees
8.15 mm
8.15 mm
USD $ 592.92
USD $ 625.44
93,852 JPY
143073
4AGE
5 Valve
264 degrees
256 degrees
9.0 mm
9.0 mm
USD $ 592.92
USD $ 625.44
93,852 JPY
Vehicle Type IN Duration EX Duration IN Lift EX Lift   Price Order
143032
Lancer Evolution - CD9A
260 degrees
260 degrees
10.7 mm
10.2 mm
USD $ 408.46
USD $ 430.86
64,654 JPY
143032
Lancer Evolution II - CE9A
260 degrees
260 degrees
10.7 mm
10.2 mm
USD $ 408.46
USD $ 430.86
64,654 JPY
143032
Lancer Evolution III - CE9A
260 degrees
260 degrees
10.7 mm
10.2 mm
USD $ 408.46
USD $ 430.86
64,654 JPY
143033
In stock at Tomei
Lancer Evolution IV - CN9A
260 degrees
260 degrees
10.7 mm
10.2 mm
USD $ 408.46
USD $ 430.86
64,654 JPY
143066
Limited stock at Tomei
Lancer Evolution IV - CN9A
Type R
270 degrees
270 degrees
10.7 mm
10.2 mm
USD $ 398.12
USD $ 430.86
63,017 JPY
143058
In stock at Tomei
Lancer Evolution IX - CT9A
260 degrees
260 degrees
10.7 mm
10.2 mm
USD $ 527.04
USD $ 555.95
83,424 JPY
143068
In stock at Tomei
Lancer Evolution IX - CT9A
Type R
270 degrees
270 degrees
10.7 mm
10.2 mm
USD $ 527.04
USD $ 555.95
83,424 JPY
143033
In stock at Tomei
Lancer Evolution V - CP9A
260 degrees
260 degrees
10.7 mm
10.2 mm
USD $ 408.46
USD $ 430.86
64,654 JPY
143066
Limited stock at Tomei
Lancer Evolution V - CP9A
Type R
270 degrees
270 degrees
10.7 mm
10.2 mm
USD $ 398.12
USD $ 430.86
63,017 JPY
143033
In stock at Tomei
Lancer Evolution VI - CP9A
260 degrees
260 degrees
10.7 mm
10.2 mm
USD $ 408.46
USD $ 430.86
64,654 JPY
143066
Limited stock at Tomei
Lancer Evolution VI - CP9A
Type R
270 degrees
270 degrees
10.7 mm
10.2 mm
USD $ 398.12
USD $ 430.86
63,017 JPY
143038
Lancer Evolution VII - CT9A
260 degrees
260 degrees
10.7 mm
10.2 mm
USD $ 408.46
USD $ 430.86
64,654 JPY
143067
In stock at Tomei
Lancer Evolution VII - CT9A
Type R
270 degrees
270 degrees
10.7 mm
10.2 mm
USD $ 408.46
USD $ 430.86
64,654 JPY
143038
Lancer Evolution VIII - CT9A
260 degrees
260 degrees
10.7 mm
10.2 mm
USD $ 408.46
USD $ 430.86
64,654 JPY
143067
In stock at Tomei
Lancer Evolution VIII - CT9A
Type R
270 degrees
270 degrees
10.7 mm
10.2 mm
USD $ 408.46
USD $ 430.86
64,654 JPY
143059
Lancer Evolution X - CZ4A
Type R
260 degrees
250 degrees
10.3 mm
9.8 mm
USD $ 527.04
USD $ 555.95
83,424 JPY
Vehicle IN Duration EX Duration IN Lift EX Lift   Price Order
143054
Limited stock at Tomei
Roadster - NB8C
252 degrees
256 degrees
10.0 mm
10.0 mm
USD $ 1,633.83
USD $ 1,723.44
258,615 JPY
Vehicle IN Duration EX Duration IN Lift EX Lift   Price Order
143060
In stock at Tomei
Impreza WRX STI - GDB
JDM EJ207
250 degrees
256 degrees
9.6 mm
9.8 mm
USD $ 856.44
USD $ 903.42
135,564 JPY
143062
Impreza WRX STI - GDB
JDM EJ255, USDM EJ257 2004-2007
252 degrees
252 degrees
10.3 mm
10.3 mm
USD $ 856.44
USD $ 903.42
135,564 JPY
143070
In stock at Tomei
Impreza WRX STI - GRB
JDM EJ207, USDM EJ257 2008+
260 degrees
256 degrees
9.8 mm
10.8 mm
USD $ 909.15
USD $ 959.01
143,907 JPY
143070
In stock at Tomei
Impreza WRX STI - GVB
JDM EJ207, USDM EJ257 2008+
260 degrees
256 degrees
9.8 mm
10.8 mm
USD $ 909.15
USD $ 959.01
143,907 JPY
IN Duration EX Duration IN Lift EX Lift   Price Order
143076
240 degrees
248 degrees
9.0 mm
9.1 mm
DISCONTINUED
This part is no longer available
143025
256 degrees
256 degrees
8.5 mm
8.5 mm
DISCONTINUED
This part is no longer available

About Tomei

Tomei

Tomei was founded in 1968 by members of the Johoku Riders motorcycle club, among them Nissan works driver Seiichi Suzuki. It began as a racing engine builder for Nissan engines only, and its work on the Nissan L-series and later the RB and SR engines made its name. The company took the name Tomei Powered when it moved to Machida, Tokyo, in 1994.

Tomei now develops parts for many Japanese engines, Mitsubishi, Subaru and Toyota as well as Nissan: camshafts, valve train parts, pistons, connecting rods and crankshafts, complete engines, and exhaust systems such as its well-known Expreme titanium range.

All Tomei parts

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USD $ 80.06 to 600.43

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