The origins of what we know today as JE Pistons can be traced back to 1912 and the Los Angeles foundry of William Jahns Sr. and his company W.H. Jahns. Employing the tagline, “Nothing but Pistons,” the W.H. Jahns company produced pistons and semi-finished pistons until 1948, when Jahns Sr. retired. Meanwhile, Jahns’ son, William “Uncle Bill” Jahns Jr., started and had been working on his company Jahns’ Racing Pistons since 1947. Shortly after, the business became Jahns’ Engineering Pistons, and was finally shortened to JE Pistons.
Through the following years, JE Pistons’ technology evolved, from mastering casting technology in the 60s to researching and implementing forging technology in the 70s. Numerical Controlled (NC) machines were introduced to manufacturing in the early 80s, which was quickly improved to the use of Computer Numerical Controlled (CNC) machines and a proprietary piston design and machining program in the mid-80s.
JE Pistons has continued to evolve their manufacturing processes, currently offering racing pistons either off the shelf or fully custom. JE pistons are all designed, forged, and machined in-house, allowing control over every step of the piston-making process. JE’s 7+ decades of experience in high-level racing has led to offering premium racing features, including full billet construction, EN plating, and purpose-designed coatings, to name a few.
The DIY (do it yourself) difficulty indicated can vary depending on individual skill levels and experience. Levels indicated are only estimates, based on minimal DIY experience and take into account time, tools required and level of involvement.
DIY Difficulty Levels:
VERY EASY - the easiest DIYs, done in minutes with basic hand tools.
EASY - relatively simple DIYs, requiring little time and basic mechanic tools.
INTERMEDIATE - involved DIYs that may require more time and special tools.
DIFFICULT - very involed DIYs, requiring good bit of time and special tools.
VERY DIFFICULT - the most intensive DIYs, requiring advanced tools.
Same-day shipping cutoff time for most items is 12PM CT. Orders placed past cutoff will ship out on the next business day.
"Direct Ship" refers to items which are not in stock at our main facility and instead ship from either one of our three major hub warehouses in the US or the manufacturer directly and may be subject to the manufacturer's processing and shipping times (this also includes manufacturer delays and backorders).
BMP Tuning Price Match Policy
BMP Tuning is committed to offer the lowest prices to its customers! Found a better price somewhere else? - Use our chat or contact us via phone so that we can assist you! Price matching is subject to the manufacturer's MAP policy.
COVID-19 Shipment and Order Delays
Due to the current COVID-19 outbreak you may experience some delays in order processing and shipping. While we do our best to keep product availability reflected on our site as up-to-date and as accurate as possible, we encourage you to reach out to us via email, phone or chat in order to obtain the most accurate stock status and ETAs!
International Shipping Policy
Customers are responsible for any and all import and customs fees, which may be due on delivery, and are subject to different return and cancellation policies. Please review our Return Policy for additional information.
***RETURNS AND EXCHANGES***
BMP Tuning will accept returns for UNUSED merchandise in original packaging within 1 YEAR from the time of purchase! UNUSED products in ORIGINAL PACKAGING that are RETURNED WITHIN 60 DAYS of purchase are eligible for a refund to the original payment method used. UNUSED products in ORIGINAL PACKAGING returned PAST THE 60 DAY MARK and within the 1 year return period are eligible for store credit only. After 60 days, non-stocked items will be accepted at the discretion of BMP Tuning. UNUSED products MUST BE IN ORIGINAL PACKAGING, containing all accessories, labels, and documentation.
**CUSTOMERS ARE RESPONSIBLE FOR ORIGINAL AND RETURN*** ***SHIPPING EXPENSES**
The customer is responsible for the return shipping costs/fees – original shipping fees are NON-REFUNDABLE and items shipped with FREE shipping will still be subject to actual shipping charges being NON-REFUNDABLE. BMP Tuning is not responsible for damage to items being returned to us by the shipping carrier and will contact you so that you can file a claim if an item arrives damaged. Any returned/cancelled item is subject to a fee of up to 15%. Restocking fees are WAIVED in the event of a customer receiving a damaged / incorrect product.
KATAPULT: Katapult does not allow us to issue refunds. Purchases made through Katapult that require a refund may be paid back to the customer via Zelle, PayPal, gift card, or other form that is agreed upon.
***THERE ARE ABSOLUTELY NO RETURNS ON ANY USED OR SPECIAL*** ***ORDER ITEMS***
***PLEASE CONTACT US BY EMAIL / PHONE / MESSAGE TO*** ***INITIATE A RETURN!***
If you need to return an item that does not fit your vehicle and you feel that there is an error in our listing, please contact us immediately. If we find an error on our website or on behalf of a BMP Tuning Representative, we will provide a shipping label for your return and arrange proper shipment of the correct items. ALL PRODUCTS MUST STILL BE NEW CONDITION IN THE ORIGINAL BOXES, INCLUDING LABELING, HARDWARE, AND DOCUMENTATION. Customers are responsible for checking the product description for applications prior to ordering anything from our site to verify that the items you have selected are appropriate for your vehicle. Items ordered that are listed correctly on our website but ordered in error WILL REQUIRE SHIPPING TO BE PAID BY THE CUSTOMER.
***DAMAGED/MISSING ITEMS IN SHIPMENT***
If you receive a package that is missing items or was damaged during shipment, please contact BMP Tuning WITHIN 10 DAYS OF DELIVERY. Please check all items as they are delivered! Be sure to keep all packing material, boxes and photos of the damage as this will be necessary to complete the damage claim with the specific courier. UPS/FED EX Typically take 8-15 business days to complete their investigation, however, this time frame could be extended depending on circumstances.
While we always try to provide the most accurate product and pricing information, we are humans and can make mistakes. If we listed an incorrect price or information for any product on our site, BMP Tuning reserves the right to refuse or cancel any orders placed. PRICING AND AVAILABILITY ARE SUBJECT TO CHANGE WITHOUT NOTICE.