RPM Manufacturing & Racing Services


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  What's New at RPM: 

In the Designing stage:

Billet Removeable Dome Head for the KX500 & KX540-640 BBS



This Part will not be available for several months -- We will be periodically updating the progress

(The different colors are used for the purpose Modeling)




We Specialize in CR & KX500 Big Bore Stroker engine Builds

Visit our Big Bore Stroker pages on the Menu bar above


"Rebuild it Yourself" Book or CD
Available now for only $14.95
We are currently working on a Performance book for More Horsepower!

  We use "Online Metals" for all our Fabrication needs! 

"Ordering Details"
All Parts or Service Orders need to be paid in full before any parts are ordered or service
work begins. Optional exception for parcial payment available on
Big Bore Stroker engine builds only, and will require a 75% down payment before any
work begins, with the balance due when requested or before shipping product out.
(Contact us for a 75% down payment Invoice)

"Payment Details"
Money Order, Bank Check or Electronic Bank to Bank Transfers
(Inquire for an Order Form)
Sorry, we no longer accept PayPal  

"Shipping Details"
We will use USPS for most all of our shipments and Flate rate boxes when ever possible
Flat Rate Charges for Small & Large Boxes
(USA Domestic) $12.00 & $16.00
(CANADA) $28.00 & $38.00
(International) $55.00 & $65.00 
The shipping charge on items that don't fit flate rate boxes will be calculated  

Domestic (USA) Parts orders can take 10 business days or more once payment is accepted
International & Canada's parts orders can take 3 weeks or more

 "Cancelations or Return Details"
We are a Internet Dealer that buys & ships product as ordered, we do not stock
all items listed on this website. We only stock some common rebuild items
 for our engine rebuilding service, and for this reason we do not issue or accept
returns or cancelations on parts orders. When we place your order, there may be a
possibility that an item(s) will be out of stock or on backorder at that time. You
can cancel that particular item if you don't want to wait for it's release, and get a
refund on that item only. We do not exchange parts that were ordered wrong by you,
so make shure you have the correct model & year when placing orders.
Welcome to RPM Manufacturing & Racing Services
Your Online 2 Stroke Performance Engine Building  Dealer
We specialize in 2 Stroke off-road Custom Race engine's

The Owners of RPM Mfg. have 40+ years of performance engine building
 & racing knowledge, and are factory trained motorcycle
technitions for Kawasaki, Yamaha & Honda.
We also performed many rebuilds & performance work on Suzuki,
KTM, Bultaco, Hodaka and many others
 It is our company's goal to provide you with quality race parts &  service

"We can help you win"

  Custom Pipe Spec's   Complete Engine rebuilding   Custom BBS engines

    Custom Big Bore kits        Custom Wheel's         Custom Part machining



Welcome to Our shop




Machine Shop Services



Crankshaft rebuilding (2 & 4 Stroke)
Crankshaft Stroking and Balancing (2 & 4 Stroke)
Cylinder boring & Sleeving
Nikasil Cylinder coating Service available
Big Bore & Big Bore Stroker kit machining
Big Bore & Big Bore Stroker complete Engine building
Stage I & II Cylinder Porting (2 Stroke)
Cylinder Head Mods (2 Stroke)
Complete performance engine building
Custom Tuned Race pipe Spec's
Custom parts designed with CAD modeling software
Custom Part machining available

Powder Coating service available (see labor services)



RPM Works Racing

RPM Manufacturing & Racing Services

26 Aspen street, Ware, MA 01082
Phone: (413) 967-3682
email: joep@rpmmfg.com