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BPRATV will be closed on December 24th and 25th in observance of the Christmas holiday. We will have very limited operations from December 27th to December 31st for our annual cycle counts. Thank you for your patience and understanding. Additionally, we will be closed on January 1, 2025, for New Year's Day.
BPRATV will be closed on December 24th and 25th in observance of the Christmas holiday. We will have very limited operations from December 27th to December 31st for our annual cycle counts. Thank you for your patience and understanding. Additionally, we will be closed on January 1, 2025, for New Year's Day.

TRX250R Sphynx Cylinder Ported 363cc Big Bore Complete Stroker Motor Rebuild Kit

by BPRATV
Save 11% Save 11%
Original price $3,655.53
Original price $3,655.53 - Original price $3,655.53
Original price $3,655.53
Current price $3,249.98
$3,249.98 - $3,249.98
Current price $3,249.98

12100-HB9-770,12101-HB9-770,12200-HB9-770, 10564M07800, 4107, 6101-1102, 6101-7876, CPISORK, CBK0131, 808814, 822147, 811814, V305B, 91001-KA4-741, 91022-KA4-740, 1118-BLK, HON40360TH, 018.113, AF6, AFC6, EX483X40S, 6101-1102, CPI-0057

THE BADDEST HONDA 250R BIG BORE ON THE PLANET IS RIGHT HERE!

The Kit:

  • CP Industries 78mm bore x 76mm stroke 363cc Sphynx big bore cylinder fully Stage 3 ported & plated
  • MADE IN U.S.A. and Plated by Millennium Technologies
  • 78mm Wiseco custom forged big bore piston kit (Includes rings, wrist pin, and clips)
  • CPI head shell with spigots and full gasket O-ring kit
  • Noss Machine custom billet dome
  • Exhaust manifold with O-ring kit
  • GENUINE Moto Tassinari V-Force 3 reeds
  • Replacement throttle cable
  • UPP intake manifold for 38mm - 39mm carburetors (Stock size is available upon request)
  • Hot Rods +4mm stroker crank trued and welded at pin
  • Crank bearings
  • Crank balancer bearings
  • Transmission bearings
  • Clutch arm needle bearings
  • Water pump bearing
  • Wrist pin bearing
  • Complete gasket kit with engine oil seal kit
  • Water pump mechanical seal
  • BPRATV Talon Clutch Kit
  • Talon TITANIUM cylinder head stud kit - LIFETIME WARRANTY*
  • Race Gas Only
  • Case Boring / Machining Required (Please contact as this is a service we offer)
  • Compatible with all '86-89 Honda TRX250R models

NOTICES:

This kit is designed for professional engine builders and shops exclusively. It is not intended for enthusiasts. Professional installation is necessary. All parts in this kit are top-of-the-line components and should not encounter any issues if correctly installed by a professional.

Special Order Item - We strive to maintain these items in stock; however, due to demand, this is not always feasible. Contact us for the current wait time. Purchasing the item will position you in the queue, and we ship on a first-come, first-served basis. You may contact us at any time for an update on your order. You may cancel at any time for a full refund.

The Cylinder Process involves the receipt of an unfinished bare cylinder from Cast Precision Industries, subsequent in-house porting, and dispatch to Millennium Technologies for plating. Upon its return, the cylinder is incorporated into the other components of the kit, inspected, and then shipped to you.

BPRATV - The Best Parts. The Best Performance. The Best Price.
BRAPPPPPPPPPP!

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