The are diesel multiple unit (DMU) railcars operated by East Japan Railway Company (JR East) since 1990, primarily on non-electrified rural lines in Japan.

The "KiHa" designation derives from the classification system used by Japanese National Railways (JNR) for diesel railcars. "Ki" indicates a diesel-powered vehicle, while "Ha" indicates an ordinary passenger car, as opposed to a green car.

The KiHa 100 series comprises "short" cars measuring in length, while the KiHa 110 series comprises "long" cars measuring .

A total of 247 vehicles were built between 1989 and 1999 by Fuji Heavy Industries and Niigata Transys.

Operations KiHa 100 and 110 series DMUs are based at the following depots and used on the following lines. , , depots Hanawa Line Kamaishi Line Kitakami Line Ōfunato Line (Ichinoseki – Kesennuma) Ōminato Line Tohoku Main Line (Ichinoseki – Kitakami, Hanamaki – Morioka) Yamada Line , , depots Aterazawa Line (KiHa 101) Banetsu East Line Ishinomaki Line Kesennuma Line (Maeyachi – Yanaizu) Rikuu East Line Rikuu West Line depot Banetsu West Line (Aizu-Wakamatsu – Niitsu–Niigata) Uetsu Main Line (Niitsu – Sakata) Hakushin Line Yonesaka Line , depots Iiyama Line Koumi Line depot Hachikō Line (Komagawa – Takasaki) (KiHa 110–200, KiHa 111-200 + KiHa 112–200)

Past Iwaizumi Line (line closed in 2014)

Variants KiHa 100: long single cars KiHa 101: long single cars KiHa 110: long single cars KiHa 111: long twin cars with toilet (coupled to KiHa 112) KiHa 112: long twin cars (coupled to KiHa 111)

KiHa 100-0 The KiHa 100-0 series comprises 56 single-car units built between 1989 and 1991. The units are long and have plug doors.

The first four pre-production cars were delivered from Niigata Tekkō (now Niigata Transys) to Ichinoseki Depot in January and February 1990. Cars KiHa 100-1 and -3 were equipped with one Cummins DMF14HZ 330 hp engine per car, while cars KiHa 100-2 and -4 were each equipped with one Komatsu DMF11HZ 330 hp engine. The four pre-production cars were initially delivered with black front ends, but these were subsequently repainted white and green to match the later production series cars.

Four production-series cars were then delivered from Fuji Heavy Industries in March 1991. These were each equipped with one Komatsu DMF11HZ 330 hp engine. Differences from the four pre-production series cars included abandoning of the three pairs of tip-up seats near the doorways, and elimination of the dummy exterior window at the toilet position.

38 2nd-batch cars were delivered from June to October 1991. Cars 9 to 29, built by Fuji Heavy Industries, were delivered to Morioka Depot, and cars 30 to 46, built by Niigata Tekkō, were delivered to Ichinoseki Depot. Cars 9 to 29 are each equipped with one Niigata Tekkō DMF13HZ 330 hp engine, and cars 30 to 46 are each equipped with one Komatsu DMF11HZ 330 hp engine. Differences from the earlier 1st-batch cars included solid front-end skirts instead of the earlier pipe-style skirts.

Batch No. Built Capacity(Total/seated) Weight Pre-production 1001–1004 1990 104/41 1 1005–1008 1991 103/47 2 1009–10046

KiHa 100-200 The KiHa 100-200 series comprises five single-car units built in 1993. The units are long and have sliding doors.

The cars were delivered from Fuji Heavy Industries to Hachinohe Depot in 1993. The cab sections were extended by 250 mm to provide additional crash protection, giving an overall car length of 17,000 mm. Cars are each equipped with one Komatsu DMF11HZ 330 hp engine. A wheelchair space was provided next to one doorway, giving a seating capacity of 44 and total capacity of 103 passengers (59 standing).

KiHa 101 The KiHa 101 series comprises 13 single-car units built between 1993 and 1997. The units are long and have sliding doors used on Aterazawa Line services. Batch No. Built Capacity(Total/seated) Weight 1 1011–1016 October 1993 107/44 2 1017–10111 September 1994 3 10112–10113 February 1997

A total of 13 KiHa 101 cars were built by Niigata Tekkō (now Niigata Transys) and allocated to Shinjō Depot for use on Aterazawa Line services. Broadly based on the KiHa 100–200 series cars, these are each equipped with one Komatsu DMF11HZ 330 hp engine. Passenger accommodation consists entirely of longitudinal bench seating. A wheelchair space was provided next to one doorway, giving a seating capacity of 44 and total capacity of 107 passengers (63 standing). The fleet is painted in an overall light blue colour scheme with "FRUITS LINER" logos.

KiHa 110-0

The KiHa 110-0 series comprises 5 single-car units built between 1990 and 1991. The units are long and have plug doors. No. Built Manufacturer Seats Weight 1101 25 January 1990 Fuji Heavy Industries 52 1102 28 February 1990 1103 Niigata Tekkō 1104 8 March 1991 Fuji Heavy Industries 1105

Three pre-production cars were delivered to Morioka Depot between January and February 1990, with cars KiHa 110-1 and 2 built by Fuji Heavy Industries, and KiHa 110-3 built by Niigata Tekkō. As with the pre-production KiHa 100-0 cars, these initially had black front ends, pipe-style front-end skirts, black dummy exterior windows at the toilet positions, and plug doors. Cars KiHa 110-1 and 3 were equipped with Niigata DMF13HZA engines, while KiHa 110-2 was equipped with a Cummins DMF14HZA engine. All three cars used lightweight bolsterless DT58 motored bogies and TR242 trailer bogies, with both axles of the motor bogies driven.

Two production series cars, KiHa 110-4 and 5 were subsequently delivered to Morioka Depot from Fuji Heavy Industries in March 1991. These had standard white/green front ends and did not have dummy exterior windows at the toilet position. Both cars are equipped with Niigata DMF13HZA engines, and use DT58A motored bogies and TR242 trailer bogies.

From 2007, four cars, excluding KiHa 110–3, were transferred to Kogota Depot for use as reserved-seating cars on Minami Sanriku rapid services.

Interior The KiHa 110–0 series cars were intended for use on Rikuchū express services, and are fitted with rotating/reclining seats, with a seating capacity of 52 per car.

KiHa 110-100 The KiHa 110-100 series comprises 39 single-car units built between 1991 and 1992. The units are long and have plug doors. Batch No. Built Manufacturer Initial depot 1 110101–110104 Feb 1991 Niigata Tekkō Kōriyama 2 110105–110122 Aug 1991 Fuji Heavy Industries Koumi 3 110123–110128 Sep 1991 Niigata Tekkō Niigata 4 110129–110139 Jan 1992 Fuji Heavy Industries Hitachi-Daigo

Cars KiHa 110–101 to 104 were built by Niigata Tekkō and delivered to Kōriyama Depot, cars KiHa 110–105 to 122 were built by Fuji Heavy Industries and delivered to Koumi Depot, cars KiHa 110–123 to 128 were built by Niigata Tekkō and delivered to Niigata Depot, and cars KiHa 110–129 to 139 were built by Fuji Heavy Industries and delivered to Hitachi-Daigo Depot. Differences from the KiHa 110–0 series cars included solid front-end skirts instead of the earlier pipe-style skirts and elimination of the dummy exterior window at the toilet position. All cars are equipped with Cummins DMF14HZA engines, and use DT58A motored bogies and TR242 trailer bogies.

Interior Accommodation consists of fixed transverse seating arranged 2+1 abreast, with longitudinal bench seats at the ends of the cars. Seating capacity is 52 per car, with a total capacity of 119, including standing passengers.

KiHa 110-200

The KiHa 110-200 series comprises 45 single-car units built between 1993 and 1999. The units are long and have sliding doors. Some cars had their cab ends extended by for increased crash protection. Fourteen cars were converted from the KiHa 110-300 series and had extended cab ends as delivered. Batch No. Built/converted Capacity(Total/seated) Remarks 1 110201–110210 Feb 1993 118/53   2 110211–110220 Oct 1993 121/50 Cab ends extended 3 110221–110222 Mar 1996   4 110223–110224 Dec 1997 - Converted from KiHa 110-301–302 at JR Kōriyama 5 110225–110234 - Converted from KiHa 110-303–314 at JR Nagano 6 110235–110236 120/49 7 110237–110239 Nov 1998 120/48   8 110240–110242 Nov 1999 -   9 110243–110245 Nov 1999 -  

Interior

KiHa 110-300

The KiHa 110-300 series comprised 14 single-car units built between December 1995 and February 1996. The units were long and had sliding doors. They were used for the Akita Relay, a limited express service that operated until the opening of the Akita Shinkansen. Following the opening, the cars were converted to the KiHa 110-200 specification between May and December 1997. No. Built Manufacturer Seats Weight Initial depot Notes 110301 18 December 1995 Fuji Heavy Industries 49 Minami-Akita Converted into 110-223 on 17 November 1997 at JR Kōriyama 110302 Converted into 110-224 on 3 December 1997 at JR Kōriyama 110303 Converted into 110-225 on 31 May 1997 at JR Nagano 110304 25 December 1995Converted into 110-226 on 31 May 1997 at JR Nagano 110305Converted into 110-227 on 31 May 1997 at JR Nagano 110306 16 February 1996 Converted into 110-228 on 26 June 1997 at JR Nagano 110307 Converted into 110-229 on 9 July 1997 at JR Nagano 110308Converted into 110-230 on 9 July 1997 at JR Nagano 110309 15 February 1996 Niigata TekkōConverted into 110-231 on 9 July 1997 at JR Nagano 110310 Converted into 110-232 on 1 August 1997 at JR Nagano 110311Converted into 110-233 on 1 August 1997 at JR Nagano 110312 16 February 1996 Converted into 110-234 on 8 October 1997 at JR Nagano 110313 Converted into 110-235 on 1 August 1997 at JR Nagano 110314Converted into 110-236 on 1 August 1997 at JR Nagano

KiHa 111-0 + KiHa 112-0 The KiHa 111-0 and 112-0 series comprises 6 two-car units built in 1990. The units are long and have plug doors. No. Built Manufacturer Seats Weight Initial depot KiHa 111 KiHa 112 KiHa 111 KiHa 112 1111 + 1121 30 March 1991 Niigata Tekkō 60 64 Morioka 1112 + 1122 1113 + 1123

Three 2-car sets were built by Niigata Tekkō and delivered to Morioka Depot in March 1991. These were generally built to the same specifications as the full-production KiHa 110-0 cars, with plug doors, pipe-style front-end skirts. All cars are equipped with Niigata DMF13HZA engines, and have lightweight bolsterless DT58A motored bogies and TR242 trailer bogies.

Interior The KiHa 111-0/112-0 cars were intended for use on Rikuchū express services, and are fitted with rotating/reclining seats. The KiHa 111 cars are fitted with a toilet.

KiHa 111-100 + KiHa 112-100

The KiHa 111-100 and 112-100 series comprises 42 two-car units built between 1991 and 1992. The units are long and have plug doors. Batch No. Built Manufacturer Capacity(total/seated) Weight Initial depot KiHa 111 KiHa 112 KiHa 111 KiHa 112 1 111101 + 112101–111108 + 112108 Mar 1991 Niigata Tekkō 131/58 136/62 Kōriyama 2 111109 + 112109–111111 + 112111 Dec 1991 Koumi 3 111112 + 112112–111121 + 112121 Feb 1992 Fuji Heavy Industries Hitachi-Daigo

Cars KiHa 111/112-101 to 108 were built by Niigata Tekkō and delivered to Kōriyama Depot between February and March 1991, cars KiHa 111/112-109 to 111 were also built by Niigata Tekkō and delivered to Koumi Depot in December 1991, cars KiHa 111/112-112 to 121 were built by Fuji Heavy Industries and delivered to Hitachi-Daigo Depot in February 1992. As with the KiHa 111/112-0 cars, these cars had plug doors, but had solid front-end skirts instead of the earlier pipe-style skirts. All cars are equipped with Cummins DMF14HZA engines, and use DT58A motored bogies and TR242 trailer bogies.

Following the introduction of new KiHa E130 DMUs on the Suigun Line, cars KiHa 111/112-112 to 121 original based at Hitachi-Daigo Depot were reallocated to Morioka and Kogota depot in 2007.

Interior Interior accommodation consists of a mixture of 2+1 fixed transverse seating bays in the centre of the cars and longitudinal bench seating at the ends of cars. The KiHa 111 cars are fitted with a toilet.

KiHa 111-150 + KiHa 112-150