NAPREC

NAPREC Big Bore Throttle Body

The NAPREC Big Bore Throttle Body

The NAPREC Big Bore Throttle Body are designed, and machined to increase high rpm power and throttle response.

Features

Available Big Bore Processing for many engines (including):

  • 2JZ, 1JZ, 4A, 3S, 2ZZ,
  • RB, SR, VG, VQ, VH
  • B16, B18, K20/24, F, H, C
  • 4G63,
  • EJ20, EJ25
  • 13B-T, 13B-REW
  • M16A.

Sample RB26 Specs:

  • Larger Diameter valves:
  • OEM: 45mm
  • NAPREC: 49mm

Notes

  • The NAPREC Big Bore Throttle Body is an upgraded part, and requires an OEM part to be sent into our office. You can send your factory Throttle Body into our office or have a brand New OEM Throttle Body provided.
  • If you do not see your part or your engine listed, please make an enquiry. We are happy to answer.
Earn up to USD $ 7.10 in loyalty discounts on your next order.

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We ship to the United States and 150 other countries.

Japan Post EMS & ePacket, FedEx, DHL and more.

Vehicle Part Diameter Butterfly   Price Order
SR20DET
180SX - RS13
SR20DET
for GReddy Plenum
80 mm
USD $ 498.83
79,662 JPY
SR20DET
Silvia - S13
SR20DET
for GReddy Plenum
80 mm
USD $ 498.83
79,662 JPY
SR20DET
Silvia - S14
SR20DET
for GReddy Plenum
80 mm
USD $ 498.83
79,662 JPY
SR20DET
Silvia - S15
SR20DET
for GReddy Plenum
80 mm
USD $ 498.83
79,662 JPY
DRAG-100
Skyline GT-R - BNR32
100mm throttle valve - fitting flange as the Q45 90mm throttle valve - Fits Top Secret Surge Tank
90 mm
100 mm
USD $ 618.27
98,736 JPY
RB26-49mm
Skyline GT-R - BNR32
Expanded Bore Throttle Body
49 mm
USD $ 709.61
113,322 JPY
RB26 Throttle Body Gaskets
Expanded Bore Throttle Body - Gaskets, 50mm (x6)
Optional
USD $ 9.77
1,561 JPY
DRAG-100
Skyline GT-R - BCNR33
100mm throttle valve - fitting flange as the Q45 90mm throttle valve - Fits Top Secret Surge Tank
90 mm
100 mm
USD $ 618.27
98,736 JPY
RB26-49mm
Skyline GT-R - BCNR33
Expanded Bore Throttle Body
49 mm
USD $ 709.61
113,322 JPY
RB26 Throttle Body Gaskets
Expanded Bore Throttle Body - Gaskets, 50mm (x6)
Optional
USD $ 9.77
1,561 JPY
DRAG-100
Skyline GT-R - BNR34
100mm throttle valve - fitting flange as the Q45 90mm throttle valve - Fits Top Secret Surge Tank
90 mm
100 mm
USD $ 618.27
98,736 JPY
RB26-49mm
Skyline GT-R - BNR34
Expanded Bore Throttle Body
49 mm
USD $ 709.61
113,322 JPY
RB26 Throttle Body Gaskets
Expanded Bore Throttle Body - Gaskets, 50mm (x6)
Optional
USD $ 9.77
1,561 JPY

About NAPREC

NAPREC

Naprec is an engine parts and machining specialist in Hachioji, Tokyo, set up in April 1997, which moved from Fuchu to Hachioji in 1999. Naprec makes tuning parts for car and motorcycle engines and does engine machining, overhaul and surface treatment, with parts for engines such as the Nissan RB26, RB25 and SR20, Toyota 2JZ, 1JZ and 4A-G, and Mitsubishi 4G63.

All NAPREC parts

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