Which stroke version of the Big Bore Piston Set do I need?

Match the T1 Big Bore Piston Set to the crankshaft. The 88 mm set suits engines on an 88 mm stroke crank, and the 94.4 mm set suits 4.1 liter stroker crankshafts such as the one in the GT1R stroker kits. Compression height and dome volume differ between the two versions.

What bore sizes are available?

T1 Race Development makes the pistons in 98.00, 98.25, 98.50, 99.00 and 100.00 mm bores. The bore is not chosen on the product page; after the order is placed, the buyer is contacted to confirm the size before the set is made.

What comes with the pistons?

The GT1R spec Pro Mod set includes piston rings and T1-spec DLC coated wrist pins. Connecting rods, bearings, sleeves and machine work are separate and are chosen with the engine builder as part of the full rotating assembly for the engine.

Do these pistons need a sleeved block?

Yes. Bores of 98 mm and larger are well past the factory VR38 bore, which means removing the factory cylinder liners and fitting aftermarket sleeves. The sleeve size, piston bore and head gasket bore all need to match, so plan them together with the engine builder.

Which head gasket should I use?

T1 Race Development makes its GT1R R35 head gasket set in several bore sizes and two standard thicknesses, with a thicker option made to order. Choose the bore and thickness with the engine builder to suit the pistons, sleeves and compression target.

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Description

T1 Race Development GT1R Pro Mod Big Bore Piston Set for R35 Nissan GT-R

T1 Race Development’s GT1R Pro Mod Big Bore Piston Set for R35 Nissan GT-R is the GT1R spec piston T1 builds for VR38 engines bored well past the factory size, supplied with rings and T1-spec DLC wrist pins. It is made for two crankshaft strokes, 88 mm and 94.4 mm, and in five bore sizes from 98 mm to 100 mm, with the bore confirmed after the order is placed.

Choosing a Version

Pick the stroke that matches the crankshaft in the build. The 88 mm stroke set uses a 1.35 compression height and a +4.1 cc dome, and the 94.4 mm set, for 4.1 liter stroker crankshafts, uses a 1.23 compression height and a +1.0 cc dome. Both are available in 98.00, 98.25, 98.50, 99.00 and 100.00 mm bores.

Building a Big Bore VR38

Bores this size mean the factory cylinder liners come out and the block is sleeved, so the pistons are chosen alongside the sleeve size, the head gaskets and the rest of the rotating assembly. T1 makes its GT1R head gaskets in matching bore sizes.

Features

GT1R spec Pro Mod big bore pistons
Rings and T1-spec DLC wrist pins included
88 mm or 94.4 mm stroke versions
Five bore sizes from 98.00 to 100.00 mm

Specifications

88 mm stroke compression height: 1.35
88 mm stroke dome volume: +4.1 cc
94.4 mm stroke compression height: 1.23
94.4 mm stroke dome volume: +1.0 cc
Bore options: 98.00, 98.25, 98.50, 99.00 and 100.00 mm
Wrist pins: T1-spec DLC

Applications

Nissan GT-R: R35 | 2009-2024 | 3.8L VR38DETT V6

Notes

Bore size is confirmed after ordering; T1 contacts the buyer through BA for the bore before the Big Bore Piston Set is made
These bores require a sleeved block; machining is the engine builder’s work
Match the head gaskets to the bore with the T1 Race Development GT1R Head Gasket Set (GT1R HG)

Frequently Asked Questions

Which stroke version of the Big Bore Piston Set do I need? Match the T1 Big Bore Piston Set to the crankshaft. The 88 mm set suits engines on an 88 mm stroke crank, and the 94.4 mm set suits 4.1 liter stroker crankshafts such as the one in the GT1R stroker kits. Compression height and dome volume differ between the two versions.
What bore sizes are available? T1 Race Development makes the pistons in 98.00, 98.25, 98.50, 99.00 and 100.00 mm bores. The bore is not chosen on the product page; after the order is placed, the buyer is contacted to confirm the size before the set is made.
What comes with the pistons? The GT1R spec Pro Mod set includes piston rings and T1-spec DLC coated wrist pins. Connecting rods, bearings, sleeves and machine work are separate and are chosen with the engine builder as part of the full rotating assembly for the engine.
Do these pistons need a sleeved block? Yes. Bores of 98 mm and larger are well past the factory VR38 bore, which means removing the factory cylinder liners and fitting aftermarket sleeves. The sleeve size, piston bore and head gasket bore all need to match, so plan them together with the engine builder.
Which head gasket should I use? T1 Race Development makes its GT1R R35 head gasket set in several bore sizes and two standard thicknesses, with a thicker option made to order. Choose the bore and thickness with the engine builder to suit the pistons, sleeves and compression target.

About T1 Race Development

T1 Race Development was founded in Texas in 2005 by Tony Palo, whose 2000 Acura Integra GSR became the first eight-second front-wheel-drive street car before the shop turned its attention to the Nissan GT-R. T1 went on to become the first to exceed 230 mph in the half mile in a GT-R and the first to make 2,400 whp from the VR38DETT, and it now develops engines, drivetrain parts and complete builds for the R35 GT-R, Lamborghini Huracan and Audi R8.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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T1 Race Development GT1R Pro Mod Big Bore Piston Set for R35 Nissan GT-R

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T1 Race Development GT1R Pro Mod Big Bore Piston Set for R35 Nissan GT-R

Choosing a Version

Building a Big Bore VR38

Features

Specifications

Applications

Notes

Frequently Asked Questions

About T1 Race Development

Reviews